20121015 Ver 1_More Info Received_20121220

WITHERS &— RAVENEL
ENGINEERS I PLANNERS I SURVEYORS
1410 COMMONWEALTH DRIVE, SUITE 1o1
WILMINGTON, NORTH CAROLINA, 28403
(910) 256 -9277
FAX [phone]
TO: NC Division of Water Quality — 4o1 Wetlands Unit
512 N. Salisbury Street; 911 Floor
Raleigh, NC 276o4
WE ARE SENDING YOU
❑ Shop Drawings
❑ Copy of Letter
I ElITH0 1101 F T; NNZ M I TITA L
DATE 12/19/12
IOBNO. 02110 2.00
ATTENTION Ms. Karen Higgins
ins
PHONES
919-807-6363
RE:
Sheetz at Lufkin and Ten Ten (DWQ Pro' #12-1015)
Submittal of Response to Additional Info Request Letter
02110 2.00
Submittal of Additional Information
1
11/2/12
02110 2.00
® Attached ❑ Under separate cover via
❑ Prints ❑ Plans ❑ Samples
❑ Change order ❑ Diskette ❑
the following items:
❑ Specifications
COPIES
DATE
NO.
DESCRIPTION
12/19/12
02110 2.00
Submittal of Additional Information
1
11/2/12
02110 2.00
CD of PCN Submittal
THESE ARE TRANSMITTED as checked below:
® For approval ❑ Approved as submitted
❑ Foryour use ❑ Approved as noted
❑ As requested ❑ Returned for corrections
❑ For review and comment ❑
❑ FOR BIDS DUE 20 ❑ PRINTS RETURNED AFTER LOAN TO US
❑ Resubmit
❑ Submit
❑ Return
_ copies for approval
copies for distribution
corrected prints
REMARKS:
COPYTO: File
SIGNED: Troy Beasley
if enclosures are not as noted, kindlyno8fy us at once.

WITHERS RAVEN EL
ENGINEERS I PLANNERS I SURVEYORS
December 19, 2012
NC- Division of Water Quality
401 Wetlands Unit
Attn: Ms. Karen Higgins
1650 Mail Service Center.
Raleigh, North Carolina 27699
Re: Sheetz at Lufkin and Ten Ten (DWQ Project #12 -1015)
Corps ID# SAW - 2011 -00358
W &R Project #02110432.00
Dear Ms. Higgins,
This letter is in response to your letter, dated November 29, 2012, requesting additional information
for the Sheetz at Lufkin and Ten Ten project to complete your review of the application. Please see
below for the response to the items addressed in your letter.
s. Please complete the Required Items Checklist portion of the Level Spreader - Vegetated Filter
Strip Supplement Form and provide ALL of the required items that were omitted from the
submittal at the requested scales. A detailed technical review could not be conducted at
this time based on the information given.
Enclosed with this letter are 5 copies of all documents required by the Level Spreader- Vegetated
Filter Strip Supplement Form and Wet Detention Basin Supplement Form.
Please feel free to call if you have questions or require additional information.
Sincerely,
Troy Beasley
Environmental Scientist
Attachments:
• Revised Level Spreader- Vegetated Filter Strip BMP Supplement Form
• Executed 0 &M Agreement for Level Spreader — Vegetated Filter Strip
• Revised Wet Detention Basin Supplement Form
• Executed 0 &M Agreement for Wet Detention Basin
• Sheet 4.0 — Overall Grading and Drainage Plan
• Sheet 8.o — BMP Plan & Details (Revised)
1410 Commonwealth Drive I Suite 1011 Wilmington, NC 28403 1 tel: [phone] fax: [phone]
www.withersravene[.com I License No. C -0832

ACPA
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER - VEGETATED FILTER STRIP (LS -VFS) SUPPLEMENT
This form must be completely filled out, printed, initialed, and submitted.
H�Oa0� WAT f q
?1 ✓w��y
Oliii�e
I. PROJECT INFORMATION
Do not complete this section of the form.
Project name
Sheetz at Lufkin & Ten Ten Rd
Contact name
Craig Duerr
Phone number
(919) 535 -5142
Date
October 31, 2012
Drainage area number
1
in /hr
II. DESIGN INFORMATION
cfs
The purpose of the LS -VFS
SW Rule: 10 -year drawdown from Wet Pond
Stormwater enters LS -VFS from
A BMP
Type of VFS
Protected riparian buffer (slope < 5 %)
Explanation of any "Other" responses above
If Stormwater Enters the LS -VFS from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 in /hr storm
Time of concentration
Rainfall intensity, 10 -yr storm
Peak flow from the 10 -yr storm
Design storm
Maximum amount of flow directed to the LS -VFS
Is a flow bypass system going to be used?
Explanation of any "Other" responses above
If Stormwater Enters the LS -VFS from a BMP
Type of BMP
Peak discharge from the BMP during the design storm
Peak discharge from the BMP during the 10 -year storm
Maximum capacity of a 100 -foot long LS -VFS
Peak flow directed to the LS -VFS
Is a flow bypass system going to be used?
Explanation of any "Other" responses above
ft
Do not complete this section of the form.
ft
Do not complete this section of the form.
%
Do not complete this section of the form.
Wet detention pond
Do not complete this section of the form.
cfs
Do not complete this section of the form.
min
Do not complete this section of the form.
in /hr
Do not complete this section of the form.
cfs
Do not complete this section of the form.
TICK one.
cfs Do not complete this section of the form.
(Y or N) Do not complete this section of the form.
Wet detention pond
4.97
17.57
2
0.2
Y
cfs
cfs
cfs
cfs
(Y or N)
Form SW401 - LS -VFS - 29June2012 - Rev. 10 page 1 of 3

LS -VFS Design
Forebay surface area
Depth of forebay at stormwater entry point
Depth of forebay at stormwater exit point
Feet of level lip needed per cfs
Computed minimum length of the level lip needed
Length of level lip provided
Width of VFS
Elevation at downslope base of level lip
Elevation at the end of the VFS that is farthest from the LS
Slope (from level lip to the end of the VFS)
Are any draws present in the VFS?
Is there a collector swale at the end of the VFS?
Bypass System Design (if applicable)
Is a bypass system provided?
Is there an engineered flow splitting device?
Dimensions of the channel (see diagram below):
M
B
W
y (flow depth for 10 -year storm)
freeboard (during the 10 -year storm)
Peak velocity in the channel during the 10-yr storm
Channel lining material
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Explanation of any "Other" responses above
N (Y or N)
N (Y or N)
7.00
sq ft
19.00
in
0.38
in
50
ft /cfs
10
ft
10
ft
50
ft
422.00
fmsl
420.00
fmsl
4.00
%
N
(Y or N) OK
N
(Y or N)
N (Y or N)
N (Y or N)
7.00
ft
19.00
ft
0.38
ft
1.60
ft
2.13
ft /sec
Rip -rap
N (Y or N)
Y (Y or M
W
« s
freeboard (during the 10 -yr storm)
M
♦ B
y (d wing the 10 -yr storm) 1
M
Form SW401 - LS -VFS - 29June2012 - Rev. 10 page 2 of 3

III. REQUIRED ITEMS CHECKLIST
EDIT Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the
following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been
met, attach justification.
Requried Item:
1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
Off -site drainage (if applicable),
Delineated drainage basins (include Rational C coefficient per basin),
Forebay (if applicable),
High flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROW), and
Boundaries of drainage easement.
2. Plan details (1" = 30' or larger) for the level spreader showing:
- Forebay (if applicable),
High flow bypass system,
One foot topo lines between the level lip and top of stream bank,
Proposed drainage easement, and
Design at ultimate build -out.
3. Section view of the level spreader (1" = 20' or larger) showing:
- Underdrain system (if applicable),
Level lip,
Upslope channel, and
Downslope filter fabric.
4. Plan details of the flow splitting device and supporting calculations (if applicable).
5. A construction sequence that shows how the level spreader will be protected from
sediment until the entire drainage area is stabilized.
6. If a non - engineered VFS is being used, then provide a photograph of the VFS showing
that no draws are present.
7. The supporting calculations.
8. A copy of the signed and notarized operation and maintenance (0 &M) agreement.
Initials Page or plan sheet number and any notes:
CW2 i 4.0
614P f9.0
«cD, B�
NIA
CH
N/A
CH0
(NP
Form SW401 - LS -VFS - 29June2012 - Rev 10 page 3 of 3

0*CO3
Return after Environmental Programs Manager
recording to: Town of Apex
PO Box 250
Apex, NC 27502
FILTER STRIP, RESTORED RIPARIAN BUFFER, AND LEVEL SPREADER OPERATION &
MAINTENANCE AGREEMENT
This Operation and Maintenance Agreement ( "Agreement ") is established this 18 day
of December , 2012, by Lufkin Leased Fee LLC
( "Owner "), who is the owner of the Property (hereinafter defined), on behalf of the Owner, the
Association (if applicable), and all successor Owners of the Property and the Town of Apex
( "Town ").
The "Property" is that certain property known as
Lufkin Leased Fee LLC L02 and which is more
particularly described in that certain deed recorded in Book _1-4-251-., Page 2628 , Wake
County Registry.
Owner represents, warrants, and agrees that Owner is financially responsible for the
construction, maintenance, repair and replacement of all stormwater control structures,
appurtenances and vegetation, including the impoundment, located on the Property. Owner
agrees to perform the maintenance as outlined below and as may be applicable or required as
part of the regulations set forth in Section 6.1.12 of the Town of Apex Unified Development
Ordinance. A Home Owners Association or Property Owners Association shall not be the
financially responsible party unless more than 50% of the lots or units have been sold and a
resident of the subdivision has been named the president.
Owner shall keep a maintenance record for maintenance performed related to
stormwater Best Management Practices on the Property ( "BMP Maintenance Record "). The
BMP Maintenance Record shall be kept by Owner in a log in a known, set location and made
available upon request. Any deficient BMP elements noted in the inspection shall be corrected,
repaired or replaced immediately by Owner. These deficiencies can affect the integrity of
structures, safety of the public, and the pollutant removal efficiency of the BMP.

2
NUMBER OF FILTER STRIPS:
1
NUMBER OF RESTORED RIPARIAN BUFFERS: 0
NUMBER OF LEVEL SPREADERS: 1
A filter strip is a section of land capable of sustaining sheet flow and is either forested or
vegetated with turf grasses or other plants. Restored riparian buffers are natural or
constructed low- maintenance ecosystems adjacent to surface water bodies with trees, grasses,
shrubs, and herbaceous plants. Level spreaders do not remove pollutants by themselves, but
they are crucial in assuring the effectiveness of certain BMPs and in protecting the function of
riparian buffers. A level spreader consists of a concrete linear structure constructed at virtually
zero percent grade. One of the main purposes of a level spreader is to disperse concentrated
stormwater flows over a wide enough area to prevent erosion of the BMP or filter strip where it
outlets.
Inspection and maintenance procedures:
• Immediately after the filter strip is established, any newly planted vegetation shall be
watered twice weekly if needed until the plants become established (commonly six
weeks). The watering shall take place on designated days according to the odd /even
watering schedule cited in the Town of Apex Code of Ordinances.
• Once a year, the filter strip shall be reseeded to maintain a dense growth of vegetation.
• Stable groundcover shall be maintained in the drainage area to reduce the sediment
load to the vegetation.
• Two to three times a year, grass filter strips shall be mowed and the clippings harvested
to promote the growth of thick vegetation with optimum pollutant removal efficiency.
Turf grass should not be cut shorter than 3 to 5 inches and may be allowed to grow as
tall as 12 inches depending on aesthetic requirements.
• Once a year, the soil shall be aerated and lime will be added if necessary.
• Weeds or shrubs growing on level spreader or in swale shall be removed.
• The level lip shall be inspected for settling, erosion, or concentrated flow.
After the filter strip /buffer /level spreader is established /installed, Owner shall inspect once a
quarter and within 24 hours after every storm event greater than 1.0 inches. Owner shall keep
records of inspection and maintenance in a known, set location and will be made available
upon request.
Last updated: 6/18/2012

Notices to Owner shall be sent to:
W41' ► L44s1eA lac ,1,1,E
q90 y w4.6" !?*I b r. 15N i I&D
12 le4 , NG 210
Am . ':I�G M �`�l WGGhGu
(Phone number)
Cq19) 3z2- y313
Notices to Town shall be sent to:
Environmental Programs Manager
PO Box 250
Apex, NC 27502
(919) 249 -3413
Last updated: 6/18/2012

Inspection activities shall be performed by Owner as follows. Any problems that are
found shall be repaired by Owner immediately.
BMP Element
Potential Problems
Problem Remediation
The entire filter strip
Trash /debris is present.
Remove the trash /debris.
system
Unclog the conveyance and dispose
The flow splitter device is
The flow splitter device
clogged.
of any sediment off -site.
(if applicable)
Make any necessary repairs or
The flow splitter device is
damaged.
replace if damage is too large for
repair.
The swale is clogged with
Remove the sediment and dispose
sediment.
of it off -site.
Repair or replace lip.
The level lip is cracked,
settled, undercut, eroded or
otherwise damaged.
The swale and the level
Regrade the soil to create a berm
There is erosion around the
lip
end of the level spreader
that is higher than the level lip.
that shows stormwater has
Plant a ground cover and water
bypassed it.
until it is established. Provide lime
and a one -time fertilizer
application.
Remove them.
Trees or shrubs have begun
to grow on the swale or just
downslope of the level lip.
Areas of bare soil and /or
Regrade the soil if necessary to
erosive gullies have formed.
remove the gully, and then
reestablish proper erosion control.
The bypass channel
Study the site to see if a larger
Turf reinforcement is
damaged or riprap is rolling
bypass channel is needed (enlarge
downhill.
if necessary). After this, reestablish
the erosion control material.
The filter strip
Grass is too short or too
Maintain grass at a height of
long.
approximately three to six inches.
Last updated: 6/18/2012

BMP Element I Potential Problems
The outlet device
Areas of bare soil and /or
erosive gullies have formed.
5
Problem Remediation
Regrade the soil if necessary to
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one -time fertilizer application.
Sediment is building up on Remove the sediment and
the filter strip. restabilize the soil with vegetation
if necessary. Provide lime and a
one -time fertilizer application.
Plants are desiccated
Plants are dead, diseased, or
dying.
Nuisance
choking
species.
Provide additional irrigation and
fertilizer as needed.
Determine the source of the
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one -time
fertilizer application.
vegetation is Remove vegetation by hand if
out desirable possible. If pesticide is used, do
not allow it to get into the receiving
water.
Erosion or other signs of
damage have occurred in the
outlet.
Contact the Town of Apex Public
Works & Utilities Department at
249 -3427.
Last updated: 6/18/2012

The agreements, conditions and obligations contained herein are and shall be covenants
and the same shall be binding upon the Owner and its agents, personal representatives, heirs
and assigns and all other successors in interest and shall continue as a servitude running with
the above described land in perpetuity. Owner agrees to notify the Town of Apex of any
problems with the BMP and notify the Town prior to any changes to the BMP or responsible
party.
IN WITNESS WHEREOF, the Owner has caused this instrument to be signed in its
corporate name by its duly authorized officers and its seal to be hereunto affixed by authority
of its Board of Directors, the day and year first written above.
4 m. rn,
(Owner)
m4NR40-
Title
Attest:
Secretary (Corporate Seal)
STATE OF Z—,
We &11- COUNTY
I, the undersigned Notary Public, do hereby certify
that ,]0 -�01+� 1M �SUa�� r�� personally appeared before me this day and acknowledge
the execution of the foregoing instrument.
Witness my hand and official seal this 1% day of 20
My commission expires S5 `7--k6 t 7
Notary Public
o\ N T O/
P
61,
SEALP�
Notary Public u'
= Granville County
/ / / /�THI C A���,\\\��
Last updated: 6/18/2012

Permit No
(to be provided by DWQ)
OF W ATF9
MA�' —0 OG
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Is the pre /post control of the lyr 24hr storm peak flow required?
Project name
Sheetz at Lufkin & Ten Ten Rd
Contact person
Craig Duerr
Phone number
(919) 535 -5142
Date
31- Oct -12
Drainage area number
1
II. DESIGN INFORMATION
Post - development 1 -yr, 24 -hr peak flow
Site Characteristics
Pre /Post 1 -yr, 24 -hr peak flow control
Drainage area
298,188 ft2
Impervious area, post - development
222,592 ftz
% impervious
74.65%
Design rainfall depth
1.0 in
Storage Volume: Non -SA Waters
Top of 1 Oft vegetated shelf elevation
Minimum volume required
17,936 ft3
Volume provided
18,339 ft3
419.00 fmsl
OK, volume provided is equal to or in excess of volume required.
Storage Volume: SA Waters
Sediment storage provided
1.5" runoff volume
ft3
Pre - development 1 -yr, 24 -hr runoff
ft3
Post - development 1 -yr, 24 -hr runoff
ft3
Minimum volume required
ft3
Volume provided
ft3
Peak Flow Calculations
Is the pre /post control of the lyr 24hr storm peak flow required?
Y (Y or N)
1 -yr, 24 -hr rainfall depth
in
Rational C, pre - development
(unitless)
Rational C, post - development
(unitless)
Rainfall intensity: 1 -yr, 24 -hr storm
in /hr
Pre - development 1 -yr, 24 -hr peak flow
6.81 ft3 /sec
Post - development 1 -yr, 24 -hr peak flow
6.52 ft3 /sec
Pre /Post 1 -yr, 24 -hr peak flow control
-0.29 ft3 /sec
Elevations
Temporary pool elevation
427.15 fmsl
Permanent pool elevation
425.50 fmsl
SHWT elevation (approx. at the perm. pool elevation)
426.00 fmsl
Top of 1 Oft vegetated shelf elevation
426.00 fmsl
Bottom of 1 Oft vegetated shelf elevation
425.00 fmsl
Sediment cleanout, top elevation (bottom of pond)
419.00 fmsl
Sediment cleanout, bottom elevation
418.00 fmsl
Sediment storage provided
1.00 ft
Is there additional volume stored above the state - required temp. pool?
N (Y or N)
Elevation of the top of the additional volume
fmsl
Form SW401 -Wet Detention Basin - Rev.9- 4/18/12 Parts I. & II. Design Summary, Page 1 of 2

Permit No
(to be provided by DWQ)
Surface Areas
Drawdown through orifice?
Area, temporary pool
12,264 ft'
2.00 in
Area REQUIRED, permanent pool
7,693 ft'
Coefficient of discharge (Co)
SA /DA ratio
2.58 (unitless)
1.75 ft
Area PROVIDED, permanent pool, Apenisool
8,923 ft'
OK
Area, bottom of 1 Oft vegetated shelf, Abot shelf
7,090 ft'
( unitless)
Area, sediment cleanout, top elevation (bottom of pond), Abot pond
2,045 ft'
Driving head (H)
Volumes
Pre - development 1 -yr, 24 -hr peak flow
6.81 ft3 /sec
Volume, temporary pool
18,339 ft
OK
Volume, permanent pool, Vpertn_ pool
30,333 ft
2.50 days OK, draws down in 2 -5 days.
Volume, forebay (sum of forebays if more than one forebay)
6,885 ft
OK
Forebay % of permanent pool volume
22.7% %
Insufficient forebay volume.
SA /DA Table Data
Design TSS removal
85%
Coastal SA /DA Table Used?
N (Y or N)
Mountain /Piedmont SA /DA Table Used?
Y (Y or N)
SA /DA ratio
2.58 (unitless)
Average depth (used in SA /DA table):
Calculation option 1 used? (See Figure 10 -2b)
N (Y or N)
Volume, permanent pool, Vpertn_ pool
30,333 ft'
Area provided, permanent pool, Apertn_ pool
8,923 ft'
Average depth calculated
ft
Need 3 ft min.
Average depth used in SA /DA, deU, (Round to nearest 0.5ft)
ft
Calculation option 2 used? (See Figure 10 -2b)
Y (Y or N)
Area provided, permanent pool, Apertn_ pool
8,923 ft'
Area, bottom of 1 Oft vegetated shelf, Abot shelf
7,090 ft'
Area, sediment cleanout, top elevation (bottom of pond), Abot pond
2,045 ft
"Depth" (distance b/w bottom of 1 Oft shelf and top of sediment)
6.00 ft
Average depth calculated
4.64 ft
OK
Average depth used in SA /DA, deU, (Round to down to nearest 0.5ft)
4.0 ft
Insufficient. Check calculation.
Drawdown Calculations
Drawdown through orifice?
Y (Y or N)
Diameter of orifice (if circular)
2.00 in
Area of orifice (if- non - circular)
in
Coefficient of discharge (Co)
0.60 (unitless)
Driving head (Ho)
1.75 ft
Drawdown through weir?
(Y or N)
Weir type
(unitless)
Coefficient of discharge (C.)
( unitless)
Length of weir (L)
ft
Driving head (H)
ft
Pre - development 1 -yr, 24 -hr peak flow
6.81 ft3 /sec
Post - development 1 -yr, 24 -hr peak flow
6.52 ft3 /sec
Storage volume discharge rate (through discharge orifice or weir)
0.15 ft3 /sec
Storage volume drawdown time
2.50 days OK, draws down in 2 -5 days.
Additional Information
Vegetated side slopes
3 :1
OK
Vegetated shelf slope
10 :1
OK
Vegetated shelf width
10.0 ft
OK
Length of flowpath to width ratio
2 :1
Insufficient flow path to width ratio. Must not short - circuit pond.
Length to width ratio
2.0 :1
OK
Trash rack for overflow & orifice?
Y (Y or N)
OK
Freeboard provided
1.1 ft
OK
Vegetated filter provided?
y (Y or N)
OK
Recorded drainage easement provided?
y (Y or N)
OK
Capures all runoff at ultimate build -out?
y (Y or N)
OK
Drain mechanism for maintenance or emergencies is
Flow through primary spillway
Form SW401 -Wet Detention Basin - Rev.9- 4/18/12 Parts I. & II. Design Summary, Page 2 of 2

Permit No.
Jill, REQUIRED ITEMS CHECKLIST
(to be provided by DWQ)
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page/ Plan
Initials Sheet No.
4,0 1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
CMI9 8,() 2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
- Maintenance access,
- Permanent pool dimensions,
- Forebay and main pond with hardened emergency spillway,
- Basin cross - section,
- Vegetation specification for planting shelf, and
- Filter strip.
C M 8,P Q 3. Section view of the wet detention basin 0 " = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
rr on the plans prior to use as a wet detention basin.
NIA 5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay,
to verify volume provided.
N A 6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
N 7. The supporting calculations.
GM 8. A copy of the signed and notarized operation and maintenance (0 &M) agreement.
9. A copy of the deed restrictions (if required).
NIA _ 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
i soil maps are not an acceptable source of soils information.
Form SW401 -Wet Detention Basin -Rev.9 -4/18/12 Part III. Required Items Checklist, Page 1 of 1

D P CX
a
z
.sy�H CA�ov
Return after Environmental Programs Manager
recording to: Town of Apex
PO Box 250
Apex, NC 27502
WET DETENTION BASIN OPERATION & MAINTENANCE AGREEMENT
This Operation and Maintenance Agreement ( "Agreement ") is established this 18 day
of December 201? by Lufkin Lease Fee LLC
( "Owner "), who is the owner of the Property (hereinafter defined), on behalf of the Owner, the
Association (if applicable), and all successor Owners of the Property and the Town of Apex
( "Town ").
The "Property" is that certain property known as
Lufkin Leased Fee LLC L02 and which is more
particularly described in that certain deed recorded in Book 14251 Page 2628 Wake
County Registry.
Owner represents, warrants, and agrees that Owner is financially responsible for the
construction, maintenance, repair and replacement of all stormwater control structures,
appurtenances and vegetation, including the impoundment, located on the Property. Owner
agrees to perform the maintenance as outlined below and as may be applicable or required as
part of the regulations set forth in Section 6.1.12 of the Town of Apex Unified Development
Ordinance. A Home Owners Association or Property Owners Association shall not be the
financially responsible party unless more than 50% of the lots or units have been sold and a
resident of the subdivision has been named the president.
Owner shall keep a maintenance record for maintenance performed related to
stormwater Best Management Practices on the Property ( "BMP Maintenance Record "). The
BMP Maintenance Record shall be kept by Owner in a log in a known, set location and made
available upon request. Any deficient BMP elements noted in the inspection shall be corrected,
repaired or replaced immediately by Owner. These deficiencies can affect the integrity of
structures, safety of the public, and the pollutant removal efficiency of the BMP.

2
NUMBER OF WET DETENTION BASINS:
1
A wet detention basin is a stormwater management facility that includes a permanent
pool of water for removing pollutants and additional capacity above the permanent pool for
detaining stormwater runoff. The wet detention basin system is defined as the wet detention
basin, outlet structure, pretreatment including forebays, grassed swales, and the vegetated
filter if one is provided.
The system (check one): (x) does (_) does not incorporate a vegetated filter at the outlet.
The system (check one): (_) does ( x ) does not incorporate a pretreatment other than a
forebay.
Inspection and maintenance procedures:
• Immediately after the wet detention basin is established, the plants on the vegetated
shelf and perimeter of the basin shall be watered twice weekly if needed, until the
plants become established (commonly six weeks). The watering shall take place on
designated days according to the odd /even watering schedule cited in the Town of Apex
Code of Ordinances.
• No portion of the wet detention basin shall be fertilized after the first initial fertilization
that is required to establish the plants on the vegetated shelf.
• Stable ground cover shall be maintained in the drainage area to reduce the sediment
load to the wet detention basin.
• The flushing of the sediment through the emergency drain shall be minimized to the
maximum extent practical.
After the wet detention basin is established, Owner shall inspect it once a month and within 24
hours after every storm event greater than 1.0 inches. Owner shall keep records of inspection
and maintenance in a known, set location and will be made available upon request.
Notices to Owner shall be sent to:
4g04 Wit -hrs P,�d G Dr.4vi4c- l40
��' NG 27G4G
h?TW 'To,& H`-yw-ef -"
(Phone number)
L19i 1424 -` 313
Notices to Town shall be sent to:
Environmental Programs Manager
PO Box 250
Apex, NC 27502
(919) 249 -3413
Last updated: 6/18/2012

Inspection activities shall be performed by Owner as follows. Any problems that are
found shall be repaired by Owner immediately.
BMP Element
Potential Problems
Problem Remediation
The entire BMP
Trash /debris is present.
Remove the trash /debris.
Regrade the soil if necessary to
Areas of bare soil and /or
remove the gully and plant a
The perimeter of the wet
erosive gullies have formed.
ground cover. Water until it is
established; provide lime and a
detention basin
onetime fertilizer application.
Vegetation is too short or
Maintain vegetation at a height of
too long.
approximately six inches.
Unclog the pipe. Dispose of the
The pipe is clogged.
sediment offsite.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
The inlet device: pipe or
Regrade the Swale if necessary to
Swale
smooth it over and provide erosion
Erosion is occurring in the
control devices such as reinforced
swale.
turf matting or riprap to avoid
future problems with erosion.
Search for the source of the
Sediment has accumulated
sediment and remedy the problem
to a depth greater than the
if possible. Remove the sediment
original design depth for
and dispose of it in a location
sediment storage.
where it will not cause impacts to
streams or the BMP.
The forebay
Provide additional erosion
protection such as reinforced turf
Erosion has occurred.
matting or riprap if needed to
I prevent future erosion problems.
Remove the weeds, preferably by
Weeds are present.
hand. If pesticide is used, wipe it on
the plants rather than spraying.
Best professional practices
show that pruning is needed
Prune according to best
to maintain optimal plant
professional practices.
health.
Determine the source of the
The vegetated shelf
problem: soils, hydrology, disease,
etc. Remedy the problem and
Plants are dead, diseased, or
replace plants. Provide a onetime
dying.
fertilizer application to establish
ground cover if a soil test indicates
it is necessary.
Last updated: 6/18/2012

BMP Element
Potential Problems
Problem Remediation
Remove the weeds, preferably by
Weeds are present.
hand. If pesticide is used, wipe it on
the plants rather than spraying.
Search for the source of the
Sediment has accumulated
sediment and remedy the problem
to a depth greater than the
if possible. Remove the sediment
original depth for sediment
and dispose of it in a location
storage.
where it will not cause impacts to
The main treatment area
streams or the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Use traps to remove muskrats and
Evidence of muskrat or
consult a professional to remove
beaver activity is present.
beavers.
The embankment
A tree has started to grow
Consult a dam safety specialist to
on the embankment.
remove the tree.
An annual inspection shows
Make all needed repairs. Consult a
that the embankment needs
professional.
repair.
Clean out the outlet device.
Clogging has occurred.
gg g
Dispose of the sediment offsite.
Repair or replace the outlet device.
The outlet device is
The outlet device
damaged.
Contact the Town of Apex Public
Erosion or other signs of
damage have occurred in the
Works & Utilities Department at
outlet.
2493427.
Last updated: 6/18/2012

�1
The measuring device used to determine the sediment elevation shall be such that it will give
an accurate depth reading and not readily penetrate into accumulated sediments.
When the permanent pool depth reads 6.5 feet in the main pond, the sediment shall be
removed to original design specifications.
When the permanent pool depth reads 5.5 feet in the forebay, the sediment shall be
removed to original design specifications.
Sediment Removal
Bottom EI. 419
BASIN DIAGRAM
(fill in the blanks)
rcrmuncnu, rour r.levauun 425.5
Tstediment\-";Itir� TI'ML']lr ol.
420 Volu/irt,
------ -- ° °- Sediment Removal Elevation 419
-ft min.
- - - - -- ------Remo-- --- - °- �-- -- - - - ---- -- --
c Bottom Elevation 416 1 -ft ed. Storage
FOREBAY MAIN POND
Last updated: 6/18/2012

The agreements, conditions and obligations contained herein are and shall be covenants
and the same shall be binding upon the Owner and its agents, personal representatives, heirs
and assigns and all other successors in interest and shall continue as a servitude running with
the above described land in perpetuity. Owner agrees to notify the Town of Apex of any
problems with the BMP and notify the Town prior to any changes to the BMP or responsible
party.
IN WITNESS WHEREOF, the Owner has caused this instrument to be signed in its
corporate name by its duly authorized officers and its seal to be hereunto affixed by authority
of its Board of Directors, the day and year first written above.
JI
y!i .
(❑ e )
NA
Title
Attest:
Secretary (Corporate Seal)
STATE OF JZ;k !
UDQJ-412— COUNTY
I, the undersigned Notary Public, do hereby certify
that . 3oS--Vti f'y'V-- S,:O -cow-j personally appeared before me this day and acknowledge
the execution of the foregoing instrument.
Witness my hand and official seal this _V$ day of 20
My commission expires S -7 " d,o�
Notary Public
"S' le
r�le
O
SEAL \�t p. N "X
Notary Public co
- Granville county
CA R
Last updated: 6/18/2012

U
Ld
w
a
N
NN
U
0
0
3
a
Uj0
0
z
a
0
0
Z
s
N
L
X
w
in
U
0
0
N
L
N
N
M
0
M
a
0
i
i
Y
Vx
,
1 1 \ \
\ \ \ \
I 01 I /
= At7--f: /l ✓/
Gd
OLD LUFKI - -- — ;�► \ �/� / ss\ MG \�\ \\�/ / / / l
N ROAD_ (� -144
_ _ _
/� �'�'_ �— — _ _ / �FM _ FWT-{ — =�FM _F — �,�J}�� R T�� I J j / /J� \ op
/ _ _ / / F%f ������ / r / /i % \ \ \ \
J -W F�.� (F � 'FM- ."� �� / d,� \ \ \�j \ \ \ \ ��FM
J --- — — — •_ =� J— fir- _
/ /_G_ �M `I� \ ` \�\ / \ /'- _ ✓\` Aj \✓ / / /
I ,
\ I I \
���� L i� ` \`
�45/\/
\y I — 1YPE \\ ` \\ �� \ \ > \\\ / /\ I I I I I I 1 1 1 \ \ eVFF ON
70, e(/ ��— 445,r f \ \\\ \ `� �' I I I I \ \ \ �ME�E UC�� / I �. \ \ \ • �'`
I ( LBG SEA l \ \ y I I \ l E ?\_N 3 / 4 / t .� : �;::• I 1 /
\\ \ ♦ I \ \ \ \ 1008 'CO E 50 X45 - y'<-
\ 1
444 >�` O`R / \
*443 \ \�l�\ \� \ \ \ \ \ \ \ \ \P �P` \ /�,0. - -- -__ -,_ - -/ // X445 \ f'I" \` \ \ «'`. •Z`'' ✓ I I I
I \/ /I r
441 \ �s \\ \\ \
\ \�\ \ \ \ \ \ \ `� TOTAL SITE_AR•EA = — 3 Q AC - - - - - -
440 �\\ \\ \\ \ \� \ \.\. �- ;� -_ - - -/ / // / /,ol�' / I I \ 5 �- �•, \ \ 1 1 \ \�i // / /
1�E- ReL4TITSSOB a�` I
c—`
0 � / / / / / / / - �`k \�\\ \ \ \ \ - - D1�A.�N� -FROM \ / i, / / �/ I I �/ :::� // \\ \ .: ..• \ \ , l \ \ \ \ F� / / /
�\ \ - R9LJ�E- S�flRM= _ - -E �B7i TO-BM P 1
\\ .- DRAINAGE F� 9M--
_ 435 \ \ \ \ �� \ \ \ \\ \\ \ G / I �✓ .. �/ \\ \ ' \ 1
\ \\\ � � EX FE TO By _ f� / !/ '
/ I
'F - — — /�N /// Sao // r�� // \ \ \ �� \ \Fc
—_ — - - -i / —____ - -- \\ \ \\ \\\ \ \ \ \\\ , \ PUBS �T�— �, /�� /�\ \ \ \ \ \ \ \ \ \
t - - -- _ \_ _ _ \ \ \ \ \\\\ i -/-�� \
- - - -- I , / _ -- \ 38 \ \ \ \\ \ \ \ \ / — _ 1 1 / / / / \ ♦ I 1 0� �/ \ \off \ •� /
\ \ I / / —445
j\ I I I WET POND �� - h G p <
MP
— 1 "
\ I\ 1 I I . _
\ \ N \ mod-
- _ — — � \\ \ \ l I � ' \ / / � / \ \ 1 1 3 R P III � �� 4� - - - �� � • ° - of ^ia � f a � ' � .` — — — �' � o�� / / / ��. / // o'�"IyF �l I 1 •. I \ \ \ \ I
41\G �1 I • � �. � � a � —� a / / \ \ \ \
FLO I III I l y. / ° I f ,�.� (�� j' /�
49 1 \ \ -B IP S�
a // / / s� '. / � ham'•• � \ \ `'•\ \ \\ 0 1 \
PARCEL 1 1 � � I I I I I IIII I 3° 40 � , o •/ ' / �� h , ;...• . � - � • \ o \ \ •• • \ � \ \
/ / IT / ! T /
TOTAL IT = f
m I / L S E AREA 5.78 AC 26rBLD ETBFCCI4
A / / BORROW AREA
v / / / m I / (MIN. 1% SLOPE) / I III III 1 I III I I 1 _ — I I� �yo // / / //' �/ / ON //• �� / �\ — \ \ \' \1\
// I / \ / I I I / II I IIII llI /I /Il 1 I \ / / /' / % I O o /' / /' / o
{'
_445 / l I III l l \ l 1 I, / / l ' ,,�° / / ' / / I / %� J a
in \ 1
Rgo / l l I I I I I I I I A 11 -1 I /I I• %`\ � � I ' � / \ J \ \ \ \ \ 1
/' �� / .00
1 /
/ / // // / II I /I � I I I I � II- - I a it � i M/ OT L ITE ARIEA I- f�3. 3 ' •/ I I / / � O� / � Y o � I /
°� 1 \ �. \I \� I
�/ /'( / , \� ► \
°0; I �� / \` \ I /// `�ti ♦ \ \\ I \
10 LEVEL \SP EACbER 0 I // ll 1
/ I� I I \ \ I I I �\ J \
, �
L-�- -�- �- �- / / / / , / l / l l AI I l\ J' l ,/ WI TH 0' V�G TAIED I I 1 PS G I''I O�� I I /o`er/ / _ \\ i' \ I 1 �\ ♦ ` \ \
FILTER STRIA \ 1 I �g`d /.I / I S o`j`
I I I I I \ \ \ I \ II \ \ I \ — _ l\ I I I / / /h // // r1 ���'/ / /, / \ \ PP I Ry °� A'" / / ; J
ID, /�
1 I I 1 1 \ \ \ \ \ S6�d /�� / \ �� �� ���'/ 0�•� -/ // / /f' �' \ \� \ \\ J \\ \ �� �� 1
y1z,
O/ / /
2D� °� //p / / / 1Y I \_ \ \ 1 \ \ \ �\ \ \ \
GSETBACK / / /�Ll�j / / /�i / /l /l I/ // /// / /// // /i / / /�' /'
\ \\ \ \\ \\ \ \ \ \ \ \ 'tom -- /// '� /�/ / / \ / , // / / \ / A/
\ \ \ \ \ \ \ \ \ \ 60' PERIMETER BUFFER
\ DRAINAGE AREA TO BMP 1 \\
\ \ \ / # / \
\ \ \ \ \ \ \ \ \ \ \ \ \ / INCLUDING RUN -OFF FROM
\\ \ \ \ \ \ \ \ \ \ \\ \\ \\ \� - -Jll 11 / % / 111 ll''l / / / -/ �� �> ( ( / /�/' / l / / '/ '` /i / l l / / °�,X/ l i //' PORTIONS OFILUFKN ROAD
77 7 / / / / / / / // // // / / / I / / / ' / I /� / �/ \ / J `/ / AND TE�J TENT ROA AND
\\ \ \ \ \ \ \ \ \ \\\V�_ \, \ \,/ / / / // % / / / / /`'j / / / / 1 Q,r� // // /Q x / I FUTUREIDEVEIOPM NT FOR
now i \ / o I / PARCEL 2 (±§.84 CRES
)�/ 111 I l 11 ) /� / / / // �, �\ I / / / 1 I (
GRADING PLAN NOTES:
1. NO SITE DEVELOPMENT ACTIVITY INCLUDING BUT NOT LIMITED TO TESTING, CLEARING, INSTALLATION OF
S &E MEASURES, OR GRADING, SHALL OCCUR UNTIL REQUIRED PROTECTION FENCING HAS BEEN INSTALLED
AND INSPECTED. A PROTECTION FENCING INSTALLATION PERMIT MAY BE OBTAINED AT THE PLANNING
DEPARTMENT OR BY CALLING 919 249 -3426.
4. SITE ELEMENTS REQUIRED TO SATISFY RECREATIONAL REQUIREMENTS SUCH AS BUT NOT LIMITED TO 7`
PLAYFIELDS AND GREENWAY TRAILS AND ITEMS TYPICALLY ASSOCIATED WITH THEM (BENCHES, TRASH
CONTAINERS, SIGNS, ETC.) MUST MEET ANY APPLICABLE STANDARDS FOUND IN THE TOWN OF APEX g
STANDARD SPECIFICATIONS AND CONSTRUCTION DETAILS AND AND THE REQUIREMENTS OF THE TOWN OF
APEX PARKS AND RECREATION DEPARTMENT.
2. PROTECTION FENCING MUST BE PLACED AWAY FROM ANY SAVED TREE 1 -FOOT FOR EACH INCH OF TREE 5.
CALIPER. PROTECTION FENCING MUST BE PLACED AT LEAST 10 FEET AWAY FROM ANY OTHER DESIGNATED
RESOURCE CONSERVATION AREA, SUCH AS BUT NOT LIMITED TO HISTORIC BUILDINGS AND STRUCTURES,
WETLANDS, AND PONDS. PROTECTION FENCING MUST BE PLACED ALONG THE OUTSIDE LINE OF THE
100 -YEAR FLOODPLAIN, AND THE OUTSIDE EDGE OF ANY RIPARIAN BUFFER. ADDITIONAL PROTECTION
FENCING MAY BE REQUIRED IN OTHER LOCATIONS CLOSE TO CONSTRUCTION ACTIVITY WHERE IT IS
DEEMED NECESSARY BY THE ZONING ENFORCEMENT OFFICER; SUCH AREAS MAY INCLUDE BUT ARE NOT
LIMITED TO COMMON PROPERTY LINES OR NEAR PUBLIC AREAS (SIDEWALKS, ETC.). 6•
3. ALL GRADING AND SUPPORT STRUCTURES ASSOCIATED WITH ANY RETAINING STRUCTURE SHALL NOT
ENCROACH INTO ANY REQUIRED BUFFER OR PROTECTED AREA (SUCH AS BUT NOT LIMITED TO, RCA AND
CRITICAL ROOT ZONES OF TREES, PUBLIC UTILITY EASEMENTS AND RIGHTS -OF -WAY), AND SHALL BE
CONTAINED ENTIRELY ON SITE.
No.
Revision
Date
B
1
TOA 1ST REVIEW COMMENTS
09/12/12
TLM
2
TOA 2ND REVIEW COMMENTS
10/31/12
TLM
Designer
CMD TLM
Scale
1 " = 50'
Drawn By
Date
TLM
04/02/12
Checked By
Job No.
CMD
02110432.00
Town of
RETAINING SYSTEMS PROVIDING A CUMULATIVE VERTICAL RELIEF GREATER THAN FIVE FEET IN HIEGHT 9
WITHIN A HORIZONTAL DISTANCE OF 50 FEET OR LESS, INCLUDING RETAINING WALLS OR MECHANICALLY
STABILIZED EARTH WALLS SHALL BE DESIGNED AND CONSTRUCTED UNDER THE RESPONSIBLE CHARGE OF
A REGISTERED PROFESSIONAL ENGINEER AND COMPLY IN ALL ASPECTS WITH THE NC BUILDING CODE,
SECTION 1610. RETAINING SYSTEMS MEETING THIS CRITERIA WILL REQUIRE A SEPARATE BUILDING PERMIT
PRIOR TO START OF WORK.
PER UDO SECTION 6.1.12(G) - PRIOR TO APPROVAL OF A FINAL PLAT OR ISSUANCE OF A CERTIFICATE
OF OCCUPANCY, ANY DEVELOPMENT WHERE ENGINEERED STORMWATER CONTROL STRUCTURE IS REQUIRED,
PLEASE CONTACT MIKE DEATON TO DEMONSTRATE THAT THE REQUIRED STRUCTURE IS IN PLACE, THAT IT
IS OPERATIONAL, AND THAT IT COMPLIES WITH ALL RELEVANT PORTIONS OF SECTION 6.1.12 ENGINEERED
STORMWATER CONTROLS. IF THE ENGINEERED STORMWATER CONTROL STRUCTURE IS USED AS PART OF A
TEMPORARY EROSION CONTROL MEASURE, THE INSPECTION WILL OCCUR DURING THE APPROPRIATE
PHASE OF CONSTRUCTION.
SHEETZ AT LUFKIN AND TEN TEN
Wake Coun
North Carolina
A GRADING PERMIT FROM THE BUILDING INSPECTION DIVISION IS REQUIRED PRIOR TO ANY GRADING ON
SITE IN CONFORMANCE TO THE NC BUILDING CODE APPENDIX J (GRADING).
GRADING AND DRAINAGE FOR NEW LUFKIN ROAD BASED ON TOWN OF APEX RE- ALIGNMENT PROJECT
PREPARED BY KIMLEY -HORN & ASSOCIATES. CONTRACTOR TO VERIFY AS -BUILT CONDITIONS.
REFER TO SHEETS 4.1 AND 4.2 FOR DETAILED GRADING WITH SPOT ELEVATIONS FOR SHEETZ PARCEL.
REFER TO SHEET 4.3 FOR STORM DRAINAGE SCHEDULE. REFER TO SHEET 5.1 FOR OFF -SITE DIVERSIONS.
REFER TO SHEET 8.0 FOR BMP DETAILS
GRAPHIC SCALE
50 0 25 50 100
1 inch = 50 ft.
0"55,6600000600 00
° °O-` , (^6o�
° ° °
p00 O 000/ °°
o p ESS/ p00 �°
o
°
°
SEAL 0. o
° ° G °
O 0 0 O
031219 0 0
° 0 0 O
o 0000 ,q� 000. -0.0 �� ° ° °°
°0000 Coo .. 000DV 0000
OVERALL GRADING &DRAINAGE PLAN
THE SIGNATURES AFFIXED BELOW CERTIFY THAT THIS SHEET HAS BEEN REVIEWED AND APPROVED
SOLELY PER THE CERTIFICATIONS SIGNED ON THE COVER SHEET OF THESE CONSTRUCTION PLANS.
CM - ENGINEERING
CM - TRANSPORTATION
CM - BUILDING INSPECTIONS
PUBLIC WORKS - WATER /SEWER
PUBLIC WORKS - ELECTRIC
PUBLIC WORKS - S & E
DATE PUBLIC WORKS - ENV. PROGRAMS DATE
DATE PLANNING DATE
DATE PLANNING - TRANSPORTATION DATE
DATE FIRE DATE
DATE PARKS, RECREATION & CULTURAL RES DATE
DATE
WITHERS & RAVEN EL
ENGINEERS I PLANNERS I SURVEYORS
111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] www.withersravenel.com License No. C -0832
Sheet No.
4.0

U
U
0Z
fr
Ld
0
I
a
M
W
N
0
N
a�
E
U
in
0
N
I
a
a
m
m
x
rn
N
rn
0
0
U
2
N
EnU
t
in
U
0
0
J
N
L
V)
N
M
0
M
a
0
i
i
Y
-(-T \� Q LCD
F
S �LLOw
bol-
TLAND \
I \ \
1 ` WET\R0
` \BMP _
I \
ss -
' 430
/ \ 430 I
0000
I% � ♦ � I I
II II \ � ♦ ` I I I
f I
' ^1 ♦ � I 5
PLANTING REQUIREMENTS - BMP #1
SHALLOW WATER (NORMAL POOL TO 6" BELOW) = 1,725 SF 50 HERB. PLANTS / 200 SF = 432 PLANTS
PLANT TYPE
QTY
I KEY
BOTANICAL NAME
COMMON NAME
ROOT
CALIPER
HEIGHT
NOTES
HERBACEOUS
75
45
Acorus calamus
Sweet Flag
CONT.
1 Gal.
4" Pot
24" O.C.
24" O.C.
12
45
Acorus calamus 'Variegata'
Variegated Sweet Flag
CONT.
1 Gal.
4" Pot
24" O.C.
24" O.C.
12
120
Peltandra virginica
Arrow arum
CONT.
1 Gal.
4" Pot
24" O.C.
24" O.C.
120
160
Pontedaria cordata
Pickerelweed
CONT.
4" Pot
4" Pot
24" O.C.
24" O.C.
18
115
Sagittaria latifolia
Broadleaf Arrowhead
CONT.
1 Gal.
4" Pot
24" O.C.
24" O.C.
120
12
Saururus cernuus
Lizard's tail
CONT.
4" Pot
1 Gal.
24" O.C.
24" O.C.
75
31
Schoenoplectus tabernaemontani
Softstem Bulrush
CONT.
4" Pot
3 Gal.
24" O.C.
SHALLOW LAND (NORMAL
POOL TO 6" ABOVE) = 1,988 SF 50 HERB. PLANTS / 200 SF = 497 PLANTS
PLANT TYPE
QTY
I KEY
BOTANICAL NAME
COMMON NAME
ROOT
CALIPER
HEIGHT
NOTES
HERBACEOUS
45
GTI
Carex stricta
Tussock Sedge
CONT.
4" Pot
12' MIN.
24" O.C.
TREES
45
LIS
Iris versicolor
Northern Blue Flag Iris
CONT.
4" Pot
8' MIN.
24" O.C.
418.50
120
120 LF 4" DIP 0 3.33%
Iris virginica
Southern Blue Flag Iris
CONT.
4" Pot
BARREL INV OUT
24" O.C.
SHRUBS
160
ABC
Juncus effusus
Soft Rush
CONT.
4" Pot
18 " -24"
24" O.C.
418.00
115
ICB
Lobelia cardinalis
Cardinal Flower
CONT.
4" Pot
18 " -24"
24" O.C.
I
12
LCD
Scirpus cyperinus
Woolgrass
CONT.
1 Gal.
18 " -24"
24" O.C.
BMP #1 SCREENING
PLANT SCHEDULE
PLANT TYPE
QTY
I KEY
BOTANICAL NAME
COMMON NAME
ROOT
CALIPER
HEIGHT
NOTES
TLM
9
GTI
Gleditsia triacanthos inermis 'Shademaster'
Thornless Honey Locust
B &B
2 1/2"
12' MIN.
MATCHED SPECIMENS
TREES
42
LIS
Lagerstromia indica 'Siren Red' (Whit VII)
Siren Red Crape Myrtle
CONT.
1 1/2"
8' MIN.
MATCHED SPECIMENS
418.50
WATER QUALITY OUTLET BARREL
120 LF 4" DIP 0 3.33%
GROUT EACH SIDE
BARREL INV IN
.'
425.50
BARREL INV OUT
ORIFICES MUST BE CAPPED OR PLUGGED.
SHRUBS
52
ABC
Abelia x grandiflora 'Edward Goucher'
Edward Goucher Abelia
CONT.
3 Gal.
18 " -24"
48" O.C.
418.00
32
ICB
Ilex cornuta 'Burfordii Nana'
Dwarf Burford Holly
CONT.
3 Gal.
18 " -24"
48" O.C.
I
99
LCD
Loropetalum chinense'Daruma'
Daruma Loropetalum
CONT.
3 Gal.
18 " -24"
48" O.C.
31
SJG
Spiraea japonica ' Goldmound'
Goldmound Spiraea
CONT.
3 Gal.
12 " -18"
36" O.C.
21
VTS
Viburnum tinus 'Spring Bouquet'
Spring Bouquet Laurestinus
CONT.
5 Gal.
24 " -36"
60" O.C.
SKIMMER
RISER -
i
J 15 ABG
l ` 4s�
/ I oo� /
SHAL W /
WAyE / S
VEGETATED FILTER STRIP
PLANTING SPECIFICATIONS
THE VEGETATED FILTER STRIP SHALL BE
CLEARED, AND COVERED WITH A MINIMUM OF
6" OF TOPSOIL. MIX 1 -2 CUBIC YARDS OF
PEAT MOSS OR COMPOST PER 1,000 SF INTO
THE TOPSOIL. IN ADDITION, A ONE -TIME
START -UP FERTILIZATION SHOULD BE ADDED,
PER THE TABLE BELOW:
GRASS OTHER THAN CENTIPEDE:
- 75 LBS OF GROUND LIMESTONE PER 1,000
SF
- A STARTER TYPE FERTILIZER, HIGH IN
PHOSPORUS, BASED ON THE TYPE OF
GRASS AND PLANTING METHOD.
CENTIPEDE:
- 1/2 LB OF NITROGEN PER 1,000 SF
GRASS TYPE:
-GRASS TYPE SHALL BE TALL FESCUE OR
COMMON BERMUDA. GRASS SHALL BE SOD,
GROWN IN NON- CLAYEY SOIL.
-WATER SOD FREQUENTLY FOR THE FIRST
THREE WEEKS AFTER INSTALLATION, SO THAT
THE FIRST 1.5" OF SOIL IS KEPT MOIST.
WATER LEVEL DURING STORM
TRASH HOOD TOP OF DAM
1 I I
6» PEAK FLOW ATTENUATION POOL
PERMANENT POOL 10:1
r, 3' MINUMUM 10' WIDE VEGETATED SHELF TO
` 10' EXTEND TO A DEPTH OF 6" ABOVE
(SEE CHART FOR
_ ACTUAL DEPTH) VEGETATED AND BELOW THE PERMANENT POOL
_FOREBAY- SHELF
II I
12 SEDIMENT I STORAGE EARTH DAM
- STORAGE ENT- II
-i I II I I I I I l i I I I - II - I - I � DISSIPATOR PAD
ANTI- FLOATATION DEVICE RIP RAP
III_
III -
ANTI -SEEP COLLAR -
CROSS SECTION - -ICI-
RCP OUTLET PIPE
-
NTS.
No.
Revision
111A �
i
J 15 ABG
l ` 4s�
/ I oo� /
SHAL W /
WAyE / S
VEGETATED FILTER STRIP
PLANTING SPECIFICATIONS
THE VEGETATED FILTER STRIP SHALL BE
CLEARED, AND COVERED WITH A MINIMUM OF
6" OF TOPSOIL. MIX 1 -2 CUBIC YARDS OF
PEAT MOSS OR COMPOST PER 1,000 SF INTO
THE TOPSOIL. IN ADDITION, A ONE -TIME
START -UP FERTILIZATION SHOULD BE ADDED,
PER THE TABLE BELOW:
GRASS OTHER THAN CENTIPEDE:
- 75 LBS OF GROUND LIMESTONE PER 1,000
SF
- A STARTER TYPE FERTILIZER, HIGH IN
PHOSPORUS, BASED ON THE TYPE OF
GRASS AND PLANTING METHOD.
CENTIPEDE:
- 1/2 LB OF NITROGEN PER 1,000 SF
GRASS TYPE:
-GRASS TYPE SHALL BE TALL FESCUE OR
COMMON BERMUDA. GRASS SHALL BE SOD,
GROWN IN NON- CLAYEY SOIL.
-WATER SOD FREQUENTLY FOR THE FIRST
THREE WEEKS AFTER INSTALLATION, SO THAT
THE FIRST 1.5" OF SOIL IS KEPT MOIST.
WATER LEVEL DURING STORM
TRASH HOOD TOP OF DAM
1 I I
6» PEAK FLOW ATTENUATION POOL
PERMANENT POOL 10:1
r, 3' MINUMUM 10' WIDE VEGETATED SHELF TO
` 10' EXTEND TO A DEPTH OF 6" ABOVE
(SEE CHART FOR
_ ACTUAL DEPTH) VEGETATED AND BELOW THE PERMANENT POOL
_FOREBAY- SHELF
II I
12 SEDIMENT I STORAGE EARTH DAM
- STORAGE ENT- II
-i I II I I I I I l i I I I - II - I - I � DISSIPATOR PAD
ANTI- FLOATATION DEVICE RIP RAP
III_
III -
ANTI -SEEP COLLAR -
CROSS SECTION - -ICI-
RCP OUTLET PIPE
-
NTS.
No.
Revision
Date
B
1
TOA 1ST REVIEW COMMENTS
09/12/12
TLM
2
TOA 2ND REVIEW COMMENTS
10/31/12
TLM
RISER WEIR ELEVATION
3. SUBMIT SIGNED STRUCTURAL BMP 0 &M AGREEMENT AND MAINTENANCE GUARANTEE TO THE
428.50
RISER FOOTING
7' X 7' X 24" THK
4. A FINAL INSPECTION BY THE ENVIRONMENTAL PROGRAMS MANAGER SHALL BE CONDUCTED ONCE
RISER BOX
4' X 4' INSIDE DIMENSIONS
PLANNING - TRANSPORTATION
HIGH FLOW BYPASS OUTLET BARREL
100 LF 36" RCP 0 0.50%
5. IN LIEU OF STRUCTURAL BMP COMPLETION AND FINAL APPROVAL BY THE ENVIRONMENTAL
Designer
CMD TLM
Scale
AS NOTED
Drawn By
Date
TLM
04/02/12
Checked By
Job No.
CMD
02110432.00
jq
-FOR_EBAY
4'4' ON
R ER ST BOTT01�= 418.00 4V
RISER 1 1 \ \SIEDIM ``STORAGE I - --
I PDE
ILL - N�}i \
I I 1
VYE
`BMP
J PDE
\ABIL IT - l
/ /14
ss ��` � \ \ -- - / /
` \ \ ' 425 425.50
I �� NORMAL POOL =_ -
I I I 20f PRIVATE �� o \ 70.0
I I I I I I
DR*INAGE
EEMENT
I /
I I OUT
co ♦ m \ - -per
II I \ ELEV= 418.50 \ I
INV
I I I I I / ♦\ y ELEV =421.5
I( I I ENERGY
DISSIPATER \ MH 16 I
(FIL�T TOP) I
ad / I
FES 3 \ 00 10'1 LEVEL SP
GRADE AREA /I a° \ Llq ELEV =42e'
FOR VFS /
30 LONG x 10 WIDE VEGETATED
FILTER STIR /® --� t 1.67 %. \ '
REFER TO G 19T - R STRIP
/ PLANTING E (F ICATIONS THIS SHEET.
j5' LS/VFS FS 30
ACCESS
EASEMENT
GRAPHIC SCALE BMP 41
20 0 10 20 40
1 inch = 20 ft.
NOTE:
RISER BOX, SKIMMER AND OUTLET PIPE SHALL BE
INSTALLED AT PRIOR TO THE BEGINNING OF OVERALL SITE
GRADING AND SHALL BE UTILIZED AS A SEDIMENT CONTROL
DEVICE CONSTRUCTION. ONCE SITE HAS BEEN STABILIZED
AND GRADING IS COMPLETE THE BASIN SHALL BE CLEANED
OUT AND STABILIZED. THE SKIMMER SHALL BE REMOVED.
RISER SLAB
COVER/ TRASH
HOOD
RISER WEIR ELEV.
'O -RING' JOINT
PLACE STEM SUPPORTS
AT 3' FROM BASE
NORMAL POOL
i
1'
4" CAP WITH -
2" WATER QUALITY ORIFICE
6" NRS GATE VALVE -
ATTACH TEMPORARY SKIMMER -
DURING CONSTRUCTION
RISER FOOTING
VOID SPACE
8" MIN.
I /
I / SS Pvc
_1/ /
' I ARIABLE WIDTH /
\ MP MAINTENANCE
A EM CC S�
I
FLOW BY
STRUCTU
BMP #1 LEVEL SPREADER CALCULATIONS
DIMENSIONS
ELEVATION
PERMANENT POOL
FLOW OONTROL ORIFICES
425.50
TOP OF DAM
10'
430.00
WATER QUALITY ORIFICE
2.0" DIAMETER
425.50
RISER WEIR ELEVATION
3. SUBMIT SIGNED STRUCTURAL BMP 0 &M AGREEMENT AND MAINTENANCE GUARANTEE TO THE
428.50
RISER FOOTING
7' X 7' X 24" THK
4. A FINAL INSPECTION BY THE ENVIRONMENTAL PROGRAMS MANAGER SHALL BE CONDUCTED ONCE
RISER BOX
4' X 4' INSIDE DIMENSIONS
PLANNING - TRANSPORTATION
HIGH FLOW BYPASS OUTLET BARREL
100 LF 36" RCP 0 0.50%
5. IN LIEU OF STRUCTURAL BMP COMPLETION AND FINAL APPROVAL BY THE ENVIRONMENTAL
BARREL INV IN
FEET OF LEVEL LIP REQUIRED PER CFS: 10 FT /CFS
419.00
BARREL INV OUT
PARKS, RECREATION & CULTURAL RES
418.50
WATER QUALITY OUTLET BARREL
120 LF 4" DIP 0 3.33%
GROUT EACH SIDE
BARREL INV IN
.'
425.50
BARREL INV OUT
ORIFICES MUST BE CAPPED OR PLUGGED.
421.50
FLOW CONTROL ORIFICE
TWO 2.5' WIDE X 6" HIGH
427.15
EMERGENCY SPILLWAY
NOT APPLICABLE
36" RCP OUTLET BARRELL
POND BOTTOM
'O -RING' GASKETED
418.00
I /
I / SS Pvc
_1/ /
' I ARIABLE WIDTH /
\ MP MAINTENANCE
A EM CC S�
I
FLOW BY
STRUCTU
BMP #1 LEVEL SPREADER CALCULATIONS
�\
TWO 2.5' WIDE X 6" HIGH
THE FOLLOWING MUST OCCUR PRIOR TO FINAL PLAT AND /OR CERTIFICATE OF OCCUPANCY (CO):
FLOW OONTROL ORIFICES
PEAK DISCHARGE FROM BMP (10 -YEAR STORM): 0.20
CFS
1. ALL BMPS MUST BE INSTALLED IN ACCORDANCE WITH THE APPROVED CONSTRUCTION PLANS.
4' X 4' CONCRETE
PRECAST BOX
VEGETATED FILTER STRIP
MAX. CAPACITY OF 100 -FOOT LEVEL SPREADER
REQUIREMENTS INCLUDING A SIGNED AND SEALED CERTIFICATION STATEMENT.
PUBLIC WORKS - ENV. PROGRAMS
3. SUBMIT SIGNED STRUCTURAL BMP 0 &M AGREEMENT AND MAINTENANCE GUARANTEE TO THE
CM - TRANSPORTATION
WITH VEGETATED FILTER STRIP: 10
CFS
4. A FINAL INSPECTION BY THE ENVIRONMENTAL PROGRAMS MANAGER SHALL BE CONDUCTED ONCE
LEVEL SPREADER
THE AS -BUILT SUBMITTAL HAS BEEN RECEIVED. ONCE APPROVED, THE ENVIRONMENTAL
PLANNING - TRANSPORTATION
PROGRAMS MANAGER WILL SEND A BMP APPROVAL LETTER TO THE OWNER.
PUBLIC WORKS - WATER /SEWER
5. IN LIEU OF STRUCTURAL BMP COMPLETION AND FINAL APPROVAL BY THE ENVIRONMENTAL
FIRE
FEET OF LEVEL LIP REQUIRED PER CFS: 10 FT /CFS
PUBLIC WORKS - ELECTRIC
ACCORDANCE WITH UDO SECTION 6.1.12(G). IF THE CONTRIBUTING DRAINAGE AREA FOR THE
PARKS, RECREATION & CULTURAL RES
BMPS IS UNSTABLE AT THE TIME OF FINAL PLAT APPROVAL FOR A SUBDIVISION, THE TOWN WILL
CALCULATED MIN. LENGTH. OF LEVEL LIP: 2
EEET
GROUT EACH SIDE
THE VOLUME OF THE BASIN OVER A 2 -3 DAY PERIOD. POROUS BAFFLES SHALL EITHER
.'
CONTINUE TO BE MAINTAINED (IF CONVERTING FROM A SEDIMENT BASIN) OR BE INSTALLED. ANY
* USE MIN. 10 -FOOT LEVEL SPREADER LENGTH.
ORIFICES MUST BE CAPPED OR PLUGGED.
-JOINT SEALED WITH
A -LOCK NEOPRENE GASKET
6. ALL STRUCTURAL BMPS WILL BE REQUIRED TO BE CONVERTED PRIOR TO ISSUANCE OF THE
CAST IN MANHOLE WALL
FINAL CERTIFICATE OF OCCUPANCY FOR SHEETZ. DEVELOPMENT OF FUTURE PARCEL 2 WILL BE
36" RCP OUTLET BARRELL
REQUIRED TO TAKE PROPER MEASURES TO CONTROL SEDIMENTATION AT A LATER DATE WHEN
'O -RING' GASKETED
UNDER CONSTRUCTION.
CLASS III RCP
7. IF A STRUCTURAL BMP COUNTS TOWARDS RCA, THE REQUIRED LANDSCAPING SHALL BE
T
6' WIDE
I
SURGE
BMP #1 VEGETATED FILTER STRIP (VFS
BLIND SWALE
I
STONE ON
FILTER
WIDTH OF VFS: 30 -FEET
FABRIC
ELEVATION AT DOWNSLOPE OF LEVEL LIP: 321.50
ELEVATION AT THE END OF THE VFS: 321.00
UNDERDRAIN
SLOPE: 1.67%
PAVED INVERT L'A GROUT 6" ZONING COMPLIANCE OFFICER AT (919) 249 -3426.
;'r-II °pp0°o0000000p0pO
' a LEVEL SPREADER NOTES: ° ° ° °���N °CAR�� °°
..a : a •a . ' .. a , . a ° d •.. °o pEESS/•p,�,° °�tiy ° °o
" a . " 1. LEVEL SPREADER DESIGN BASED ON CURRENT o Q� `yl
°•da' DIVISION OF WATER QUALITY DESIGN GUIDELINES. o o SEAL o e
O o o p
2. INSPECT LEVEL SPREADER AFTER EACH RAINFALL, 031219 0
RISER 8c D R A WD 0 WN DEVICE DETAIL UNTIL VEGETATION IS WELL ESTABLISHED, AND o° CP 0.0 08000 0; �c
MAKE ANY NECESSARY REPAIRS; AFTERWARDS, ° ° °° q ° ° ° ° ° ° ° ° °° � °
NTS INSPECT PERIODICALLY AND KEEP VEGETATION ° °° 000000 M;o05'a's °
HEALTHY AND MAINTAINED.
SHEETZ AT LUFKIN AND TEN TEN
Town of Apex Wake County North Carolina
BMP PLAN &DETAILS
LEVEI
6' WIDE BLIND SWALE
VEGETATED FILTER STRIP
3' -0"
FLOW PATH
LEVEL 3 INCHES OF SURGE STONE
-ADER LIP
I EE� I EE� I - - - RECEIVING
- III -I I i i II I II i II I II i II I I, STREAM
3 FEET WIDE STRIP OF FILTER FABRIC
CONCRETE FOOTER
(SIZED BY OTHERS
LEVEL SPREADER DETAIL
STRUCTURAL BMP CONSTRUCTION SEQUENCE:
TWO 2.5' WIDE X 6" HIGH
THE FOLLOWING MUST OCCUR PRIOR TO FINAL PLAT AND /OR CERTIFICATE OF OCCUPANCY (CO):
FLOW OONTROL ORIFICES
THIS SHEET HAS BEEN REVIEWED AND APPROVED
1. ALL BMPS MUST BE INSTALLED IN ACCORDANCE WITH THE APPROVED CONSTRUCTION PLANS.
4' X 4' CONCRETE
PRECAST BOX
2. ENGINEER MUST SUBMIT AN AS -BUILT PACKAGE WHICH MEETS ALL TOWN OF APEX
CM - ENGINEERING
REQUIREMENTS INCLUDING A SIGNED AND SEALED CERTIFICATION STATEMENT.
PUBLIC WORKS - ENV. PROGRAMS
3. SUBMIT SIGNED STRUCTURAL BMP 0 &M AGREEMENT AND MAINTENANCE GUARANTEE TO THE
CM - TRANSPORTATION
DEVELOPMENT PROJECTS COORDINATOR IN CONSTRUCTION MANAGEMENT AT (919) 249 -3394.
4" DIP TO
4. A FINAL INSPECTION BY THE ENVIRONMENTAL PROGRAMS MANAGER SHALL BE CONDUCTED ONCE
LEVEL SPREADER
THE AS -BUILT SUBMITTAL HAS BEEN RECEIVED. ONCE APPROVED, THE ENVIRONMENTAL
PLANNING - TRANSPORTATION
PROGRAMS MANAGER WILL SEND A BMP APPROVAL LETTER TO THE OWNER.
PUBLIC WORKS - WATER /SEWER
5. IN LIEU OF STRUCTURAL BMP COMPLETION AND FINAL APPROVAL BY THE ENVIRONMENTAL
FIRE
PROGRAMS MANAGER, THE TOWN OF APEX MAY ACCEPT A PERFORMANCE GUARANTEE IN
PUBLIC WORKS - ELECTRIC
ACCORDANCE WITH UDO SECTION 6.1.12(G). IF THE CONTRIBUTING DRAINAGE AREA FOR THE
PARKS, RECREATION & CULTURAL RES
BMPS IS UNSTABLE AT THE TIME OF FINAL PLAT APPROVAL FOR A SUBDIVISION, THE TOWN WILL
PUBLIC WORKS - S & E
ALLOW A SKIMMER SYSTEM TO BE CONNECTED TO THE EMERGENCY DRAIN SIZED TO DE -WATER
GROUT EACH SIDE
THE VOLUME OF THE BASIN OVER A 2 -3 DAY PERIOD. POROUS BAFFLES SHALL EITHER
.'
CONTINUE TO BE MAINTAINED (IF CONVERTING FROM A SEDIMENT BASIN) OR BE INSTALLED. ANY
ORIFICES MUST BE CAPPED OR PLUGGED.
-JOINT SEALED WITH
A -LOCK NEOPRENE GASKET
6. ALL STRUCTURAL BMPS WILL BE REQUIRED TO BE CONVERTED PRIOR TO ISSUANCE OF THE
CAST IN MANHOLE WALL
FINAL CERTIFICATE OF OCCUPANCY FOR SHEETZ. DEVELOPMENT OF FUTURE PARCEL 2 WILL BE
36" RCP OUTLET BARRELL
REQUIRED TO TAKE PROPER MEASURES TO CONTROL SEDIMENTATION AT A LATER DATE WHEN
'O -RING' GASKETED
UNDER CONSTRUCTION.
CLASS III RCP
7. IF A STRUCTURAL BMP COUNTS TOWARDS RCA, THE REQUIRED LANDSCAPING SHALL BE
INSTALLED DURING THE APPROPRIATE GROWING SEASON AND COORDINATED WITH THE TOWN
PAVED INVERT L'A GROUT 6" ZONING COMPLIANCE OFFICER AT (919) 249 -3426.
;'r-II °pp0°o0000000p0pO
' a LEVEL SPREADER NOTES: ° ° ° °���N °CAR�� °°
..a : a •a . ' .. a , . a ° d •.. °o pEESS/•p,�,° °�tiy ° °o
" a . " 1. LEVEL SPREADER DESIGN BASED ON CURRENT o Q� `yl
°•da' DIVISION OF WATER QUALITY DESIGN GUIDELINES. o o SEAL o e
O o o p
2. INSPECT LEVEL SPREADER AFTER EACH RAINFALL, 031219 0
RISER 8c D R A WD 0 WN DEVICE DETAIL UNTIL VEGETATION IS WELL ESTABLISHED, AND o° CP 0.0 08000 0; �c
MAKE ANY NECESSARY REPAIRS; AFTERWARDS, ° ° °° q ° ° ° ° ° ° ° ° °° � °
NTS INSPECT PERIODICALLY AND KEEP VEGETATION ° °° 000000 M;o05'a's °
HEALTHY AND MAINTAINED.
SHEETZ AT LUFKIN AND TEN TEN
Town of Apex Wake County North Carolina
BMP PLAN &DETAILS
LEVEI
6' WIDE BLIND SWALE
VEGETATED FILTER STRIP
3' -0"
FLOW PATH
LEVEL 3 INCHES OF SURGE STONE
-ADER LIP
I EE� I EE� I - - - RECEIVING
- III -I I i i II I II i II I II i II I I, STREAM
3 FEET WIDE STRIP OF FILTER FABRIC
CONCRETE FOOTER
(SIZED BY OTHERS
LEVEL SPREADER DETAIL
WITHERS & RAVEN EL
ENGINEERS I PLANNERS I SURVEYORS
111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] www.withersravenel.com License No. C -0832
Sheet No.
8.0
NTS
THE SIGNATURES AFFIXED BELOW CERTIFY THAT
THIS SHEET HAS BEEN REVIEWED AND APPROVED
SOLELY PER THE CERTIFICATIONS
SIGNED ON THE COVER SHEET OF THESE CONSTRUCTION PLANS.
CM - ENGINEERING
DATE
PUBLIC WORKS - ENV. PROGRAMS
DATE
CM - TRANSPORTATION
DATE
PLANNING
DATE
CM - BUILDING INSPECTIONS
DATE
PLANNING - TRANSPORTATION
DATE
PUBLIC WORKS - WATER /SEWER
DATE
FIRE
DATE
PUBLIC WORKS - ELECTRIC
DATE
PARKS, RECREATION & CULTURAL RES
DATE
PUBLIC WORKS - S & E
DATE
WITHERS & RAVEN EL
ENGINEERS I PLANNERS I SURVEYORS
111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] www.withersravenel.com License No. C -0832
Sheet No.
8.0

ACPA
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER - VEGETATED FILTER STRIP (LS -VFS) SUPPLEMENT
This form must be completely filled out, printed, initialed, and submitted.
H�Oa0� WAT f q
?1 ✓w��y
Oliii�e
I. PROJECT INFORMATION
Do not complete this section of the form.
Project name
Sheetz at Lufkin & Ten Ten Rd
Contact name
Craig Duerr
Phone number
(919) 535 -5142
Date
October 31, 2012
Drainage area number
1
in /hr
II. DESIGN INFORMATION
cfs
The purpose of the LS -VFS
SW Rule: 10 -year drawdown from Wet Pond
Stormwater enters LS -VFS from
A BMP
Type of VFS
Protected riparian buffer (slope < 5 %)
Explanation of any "Other" responses above
If Stormwater Enters the LS -VFS from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 in /hr storm
Time of concentration
Rainfall intensity, 10 -yr storm
Peak flow from the 10 -yr storm
Design storm
Maximum amount of flow directed to the LS -VFS
Is a flow bypass system going to be used?
Explanation of any "Other" responses above
If Stormwater Enters the LS -VFS from a BMP
Type of BMP
Peak discharge from the BMP during the design storm
Peak discharge from the BMP during the 10 -year storm
Maximum capacity of a 100 -foot long LS -VFS
Peak flow directed to the LS -VFS
Is a flow bypass system going to be used?
Explanation of any "Other" responses above
ft
Do not complete this section of the form.
ft
Do not complete this section of the form.
%
Do not complete this section of the form.
Wet detention pond
Do not complete this section of the form.
cfs
Do not complete this section of the form.
min
Do not complete this section of the form.
in /hr
Do not complete this section of the form.
cfs
Do not complete this section of the form.
TICK one.
cfs Do not complete this section of the form.
(Y or N) Do not complete this section of the form.
Wet detention pond
4.97
17.57
2
0.2
Y
cfs
cfs
cfs
cfs
(Y or N)
Form SW401 - LS -VFS - 29June2012 - Rev. 10 page 1 of 3

LS -VFS Design
Forebay surface area
Depth of forebay at stormwater entry point
Depth of forebay at stormwater exit point
Feet of level lip needed per cfs
Computed minimum length of the level lip needed
Length of level lip provided
Width of VFS
Elevation at downslope base of level lip
Elevation at the end of the VFS that is farthest from the LS
Slope (from level lip to the end of the VFS)
Are any draws present in the VFS?
Is there a collector swale at the end of the VFS?
Bypass System Design (if applicable)
Is a bypass system provided?
Is there an engineered flow splitting device?
Dimensions of the channel (see diagram below):
M
B
W
y (flow depth for 10 -year storm)
freeboard (during the 10 -year storm)
Peak velocity in the channel during the 10-yr storm
Channel lining material
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Explanation of any "Other" responses above
N (Y or N)
N (Y or N)
7.00
sq ft
19.00
in
0.38
in
50
ft /cfs
10
ft
10
ft
50
ft
422.00
fmsl
420.00
fmsl
4.00
%
N
(Y or N) OK
N
(Y or N)
N (Y or N)
N (Y or N)
7.00
ft
19.00
ft
0.38
ft
1.60
ft
2.13
ft /sec
Rip -rap
N (Y or N)
Y (Y or M
W
« s
freeboard (during the 10 -yr storm)
M
♦ B
y (d wing the 10 -yr storm) 1
M
Form SW401 - LS -VFS - 29June2012 - Rev. 10 page 2 of 3

III. REQUIRED ITEMS CHECKLIST
EDIT Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the
following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been
met, attach justification.
Requried Item:
1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
Off -site drainage (if applicable),
Delineated drainage basins (include Rational C coefficient per basin),
Forebay (if applicable),
High flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROW), and
Boundaries of drainage easement.
2. Plan details (1" = 30' or larger) for the level spreader showing:
- Forebay (if applicable),
High flow bypass system,
One foot topo lines between the level lip and top of stream bank,
Proposed drainage easement, and
Design at ultimate build -out.
3. Section view of the level spreader (1" = 20' or larger) showing:
- Underdrain system (if applicable),
Level lip,
Upslope channel, and
Downslope filter fabric.
4. Plan details of the flow splitting device and supporting calculations (if applicable).
5. A construction sequence that shows how the level spreader will be protected from
sediment until the entire drainage area is stabilized.
6. If a non - engineered VFS is being used, then provide a photograph of the VFS showing
that no draws are present.
7. The supporting calculations.
8. A copy of the signed and notarized operation and maintenance (0 &M) agreement.
Initials Page or plan sheet number and any notes:
CW2 i 4.0
614P f9.0
«cD, B�
NIA
CH
N/A
CH0
(NP
Form SW401 - LS -VFS - 29June2012 - Rev 10 page 3 of 3

Permit No
(to be provided by DWQ)
OF W ATF9
MA�' —0 OG
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Is the pre /post control of the lyr 24hr storm peak flow required?
Project name
Sheetz at Lufkin & Ten Ten Rd
Contact person
Craig Duerr
Phone number
(919) 535 -5142
Date
31- Oct -12
Drainage area number
1
II. DESIGN INFORMATION
Post - development 1 -yr, 24 -hr peak flow
Site Characteristics
Pre /Post 1 -yr, 24 -hr peak flow control
Drainage area
298,188 ft2
Impervious area, post - development
222,592 ftz
% impervious
74.65%
Design rainfall depth
1.0 in
Storage Volume: Non -SA Waters
Top of 1 Oft vegetated shelf elevation
Minimum volume required
17,936 ft3
Volume provided
18,339 ft3
419.00 fmsl
OK, volume provided is equal to or in excess of volume required.
Storage Volume: SA Waters
Sediment storage provided
1.5" runoff volume
ft3
Pre - development 1 -yr, 24 -hr runoff
ft3
Post - development 1 -yr, 24 -hr runoff
ft3
Minimum volume required
ft3
Volume provided
ft3
Peak Flow Calculations
Is the pre /post control of the lyr 24hr storm peak flow required?
Y (Y or N)
1 -yr, 24 -hr rainfall depth
in
Rational C, pre - development
(unitless)
Rational C, post - development
(unitless)
Rainfall intensity: 1 -yr, 24 -hr storm
in /hr
Pre - development 1 -yr, 24 -hr peak flow
6.81 ft3 /sec
Post - development 1 -yr, 24 -hr peak flow
6.52 ft3 /sec
Pre /Post 1 -yr, 24 -hr peak flow control
-0.29 ft3 /sec
Elevations
Temporary pool elevation
427.15 fmsl
Permanent pool elevation
425.50 fmsl
SHWT elevation (approx. at the perm. pool elevation)
426.00 fmsl
Top of 1 Oft vegetated shelf elevation
426.00 fmsl
Bottom of 1 Oft vegetated shelf elevation
425.00 fmsl
Sediment cleanout, top elevation (bottom of pond)
419.00 fmsl
Sediment cleanout, bottom elevation
418.00 fmsl
Sediment storage provided
1.00 ft
Is there additional volume stored above the state - required temp. pool?
N (Y or N)
Elevation of the top of the additional volume
fmsl
Form SW401 -Wet Detention Basin - Rev.9- 4/18/12 Parts I. & II. Design Summary, Page 1 of 2

Permit No
(to be provided by DWQ)
Surface Areas
Drawdown through orifice?
Area, temporary pool
12,264 ft'
2.00 in
Area REQUIRED, permanent pool
7,693 ft'
Coefficient of discharge (Co)
SA /DA ratio
2.58 (unitless)
1.75 ft
Area PROVIDED, permanent pool, Apenisool
8,923 ft'
OK
Area, bottom of 1 Oft vegetated shelf, Abot shelf
7,090 ft'
( unitless)
Area, sediment cleanout, top elevation (bottom of pond), Abot pond
2,045 ft'
Driving head (H)
Volumes
Pre - development 1 -yr, 24 -hr peak flow
6.81 ft3 /sec
Volume, temporary pool
18,339 ft
OK
Volume, permanent pool, Vpertn_ pool
30,333 ft
2.50 days OK, draws down in 2 -5 days.
Volume, forebay (sum of forebays if more than one forebay)
6,885 ft
OK
Forebay % of permanent pool volume
22.7% %
Insufficient forebay volume.
SA /DA Table Data
Design TSS removal
85%
Coastal SA /DA Table Used?
N (Y or N)
Mountain /Piedmont SA /DA Table Used?
Y (Y or N)
SA /DA ratio
2.58 (unitless)
Average depth (used in SA /DA table):
Calculation option 1 used? (See Figure 10 -2b)
N (Y or N)
Volume, permanent pool, Vpertn_ pool
30,333 ft'
Area provided, permanent pool, Apertn_ pool
8,923 ft'
Average depth calculated
ft
Need 3 ft min.
Average depth used in SA /DA, deU, (Round to nearest 0.5ft)
ft
Calculation option 2 used? (See Figure 10 -2b)
Y (Y or N)
Area provided, permanent pool, Apertn_ pool
8,923 ft'
Area, bottom of 1 Oft vegetated shelf, Abot shelf
7,090 ft'
Area, sediment cleanout, top elevation (bottom of pond), Abot pond
2,045 ft
"Depth" (distance b/w bottom of 1 Oft shelf and top of sediment)
6.00 ft
Average depth calculated
4.64 ft
OK
Average depth used in SA /DA, deU, (Round to down to nearest 0.5ft)
4.0 ft
Insufficient. Check calculation.
Drawdown Calculations
Drawdown through orifice?
Y (Y or N)
Diameter of orifice (if circular)
2.00 in
Area of orifice (if- non - circular)
in
Coefficient of discharge (Co)
0.60 (unitless)
Driving head (Ho)
1.75 ft
Drawdown through weir?
(Y or N)
Weir type
(unitless)
Coefficient of discharge (C.)
( unitless)
Length of weir (L)
ft
Driving head (H)
ft
Pre - development 1 -yr, 24 -hr peak flow
6.81 ft3 /sec
Post - development 1 -yr, 24 -hr peak flow
6.52 ft3 /sec
Storage volume discharge rate (through discharge orifice or weir)
0.15 ft3 /sec
Storage volume drawdown time
2.50 days OK, draws down in 2 -5 days.
Additional Information
Vegetated side slopes
3 :1
OK
Vegetated shelf slope
10 :1
OK
Vegetated shelf width
10.0 ft
OK
Length of flowpath to width ratio
2 :1
Insufficient flow path to width ratio. Must not short - circuit pond.
Length to width ratio
2.0 :1
OK
Trash rack for overflow & orifice?
Y (Y or N)
OK
Freeboard provided
1.1 ft
OK
Vegetated filter provided?
y (Y or N)
OK
Recorded drainage easement provided?
y (Y or N)
OK
Capures all runoff at ultimate build -out?
y (Y or N)
OK
Drain mechanism for maintenance or emergencies is
Flow through primary spillway
Form SW401 -Wet Detention Basin - Rev.9- 4/18/12 Parts I. & II. Design Summary, Page 2 of 2

Permit No.
Jill, REQUIRED ITEMS CHECKLIST
(to be provided by DWQ)
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page/ Plan
Initials Sheet No.
4,0 1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
CMI9 8,() 2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
- Maintenance access,
- Permanent pool dimensions,
- Forebay and main pond with hardened emergency spillway,
- Basin cross - section,
- Vegetation specification for planting shelf, and
- Filter strip.
C M 8,P Q 3. Section view of the wet detention basin 0 " = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
rr on the plans prior to use as a wet detention basin.
NIA 5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay,
to verify volume provided.
N A 6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
N 7. The supporting calculations.
GM 8. A copy of the signed and notarized operation and maintenance (0 &M) agreement.
9. A copy of the deed restrictions (if required).
NIA _ 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
i soil maps are not an acceptable source of soils information.
Form SW401 -Wet Detention Basin -Rev.9 -4/18/12 Part III. Required Items Checklist, Page 1 of 1

0*CO3
Return after Environmental Programs Manager
recording to: Town of Apex
PO Box 250
Apex, NC 27502
FILTER STRIP, RESTORED RIPARIAN BUFFER, AND LEVEL SPREADER OPERATION &
MAINTENANCE AGREEMENT
This Operation and Maintenance Agreement ( "Agreement ") is established this 18 day
of December , 2012, by Lufkin Leased Fee LLC
( "Owner "), who is the owner of the Property (hereinafter defined), on behalf of the Owner, the
Association (if applicable), and all successor Owners of the Property and the Town of Apex
( "Town ").
The "Property" is that certain property known as
Lufkin Leased Fee LLC L02 and which is more
particularly described in that certain deed recorded in Book _1-4-251-., Page 2628 , Wake
County Registry.
Owner represents, warrants, and agrees that Owner is financially responsible for the
construction, maintenance, repair and replacement of all stormwater control structures,
appurtenances and vegetation, including the impoundment, located on the Property. Owner
agrees to perform the maintenance as outlined below and as may be applicable or required as
part of the regulations set forth in Section 6.1.12 of the Town of Apex Unified Development
Ordinance. A Home Owners Association or Property Owners Association shall not be the
financially responsible party unless more than 50% of the lots or units have been sold and a
resident of the subdivision has been named the president.
Owner shall keep a maintenance record for maintenance performed related to
stormwater Best Management Practices on the Property ( "BMP Maintenance Record "). The
BMP Maintenance Record shall be kept by Owner in a log in a known, set location and made
available upon request. Any deficient BMP elements noted in the inspection shall be corrected,
repaired or replaced immediately by Owner. These deficiencies can affect the integrity of
structures, safety of the public, and the pollutant removal efficiency of the BMP.

2
NUMBER OF FILTER STRIPS:
1
NUMBER OF RESTORED RIPARIAN BUFFERS: 0
NUMBER OF LEVEL SPREADERS: 1
A filter strip is a section of land capable of sustaining sheet flow and is either forested or
vegetated with turf grasses or other plants. Restored riparian buffers are natural or
constructed low- maintenance ecosystems adjacent to surface water bodies with trees, grasses,
shrubs, and herbaceous plants. Level spreaders do not remove pollutants by themselves, but
they are crucial in assuring the effectiveness of certain BMPs and in protecting the function of
riparian buffers. A level spreader consists of a concrete linear structure constructed at virtually
zero percent grade. One of the main purposes of a level spreader is to disperse concentrated
stormwater flows over a wide enough area to prevent erosion of the BMP or filter strip where it
outlets.
Inspection and maintenance procedures:
• Immediately after the filter strip is established, any newly planted vegetation shall be
watered twice weekly if needed until the plants become established (commonly six
weeks). The watering shall take place on designated days according to the odd /even
watering schedule cited in the Town of Apex Code of Ordinances.
• Once a year, the filter strip shall be reseeded to maintain a dense growth of vegetation.
• Stable groundcover shall be maintained in the drainage area to reduce the sediment
load to the vegetation.
• Two to three times a year, grass filter strips shall be mowed and the clippings harvested
to promote the growth of thick vegetation with optimum pollutant removal efficiency.
Turf grass should not be cut shorter than 3 to 5 inches and may be allowed to grow as
tall as 12 inches depending on aesthetic requirements.
• Once a year, the soil shall be aerated and lime will be added if necessary.
• Weeds or shrubs growing on level spreader or in swale shall be removed.
• The level lip shall be inspected for settling, erosion, or concentrated flow.
After the filter strip /buffer /level spreader is established /installed, Owner shall inspect once a
quarter and within 24 hours after every storm event greater than 1.0 inches. Owner shall keep
records of inspection and maintenance in a known, set location and will be made available
upon request.
Last updated: 6/18/2012

Notices to Owner shall be sent to:
W41' ► L44s1eA lac ,1,1,E
q90 y w4.6" !?*I b r. 15N i I&D
12 le4 , NG 210
Am . ':I�G M �`�l WGGhGu
(Phone number)
Cq19) 3z2- y313
Notices to Town shall be sent to:
Environmental Programs Manager
PO Box 250
Apex, NC 27502
(919) 249 -3413
Last updated: 6/18/2012

Inspection activities shall be performed by Owner as follows. Any problems that are
found shall be repaired by Owner immediately.
BMP Element
Potential Problems
Problem Remediation
The entire filter strip
Trash /debris is present.
Remove the trash /debris.
system
Unclog the conveyance and dispose
The flow splitter device is
The flow splitter device
clogged.
of any sediment off -site.
(if applicable)
Make any necessary repairs or
The flow splitter device is
damaged.
replace if damage is too large for
repair.
The swale is clogged with
Remove the sediment and dispose
sediment.
of it off -site.
Repair or replace lip.
The level lip is cracked,
settled, undercut, eroded or
otherwise damaged.
The swale and the level
Regrade the soil to create a berm
There is erosion around the
lip
end of the level spreader
that is higher than the level lip.
that shows stormwater has
Plant a ground cover and water
bypassed it.
until it is established. Provide lime
and a one -time fertilizer
application.
Remove them.
Trees or shrubs have begun
to grow on the swale or just
downslope of the level lip.
Areas of bare soil and /or
Regrade the soil if necessary to
erosive gullies have formed.
remove the gully, and then
reestablish proper erosion control.
The bypass channel
Study the site to see if a larger
Turf reinforcement is
damaged or riprap is rolling
bypass channel is needed (enlarge
downhill.
if necessary). After this, reestablish
the erosion control material.
The filter strip
Grass is too short or too
Maintain grass at a height of
long.
approximately three to six inches.
Last updated: 6/18/2012

BMP Element I Potential Problems
The outlet device
Areas of bare soil and /or
erosive gullies have formed.
5
Problem Remediation
Regrade the soil if necessary to
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one -time fertilizer application.
Sediment is building up on Remove the sediment and
the filter strip. restabilize the soil with vegetation
if necessary. Provide lime and a
one -time fertilizer application.
Plants are desiccated
Plants are dead, diseased, or
dying.
Nuisance
choking
species.
Provide additional irrigation and
fertilizer as needed.
Determine the source of the
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one -time
fertilizer application.
vegetation is Remove vegetation by hand if
out desirable possible. If pesticide is used, do
not allow it to get into the receiving
water.
Erosion or other signs of
damage have occurred in the
outlet.
Contact the Town of Apex Public
Works & Utilities Department at
249 -3427.
Last updated: 6/18/2012

The agreements, conditions and obligations contained herein are and shall be covenants
and the same shall be binding upon the Owner and its agents, personal representatives, heirs
and assigns and all other successors in interest and shall continue as a servitude running with
the above described land in perpetuity. Owner agrees to notify the Town of Apex of any
problems with the BMP and notify the Town prior to any changes to the BMP or responsible
party.
IN WITNESS WHEREOF, the Owner has caused this instrument to be signed in its
corporate name by its duly authorized officers and its seal to be hereunto affixed by authority
of its Board of Directors, the day and year first written above.
4 m. rn,
(Owner)
m4NR40-
Title
Attest:
Secretary (Corporate Seal)
STATE OF Z—,
We &11- COUNTY
I, the undersigned Notary Public, do hereby certify
that ,]0 -�01+� 1M �SUa�� r�� personally appeared before me this day and acknowledge
the execution of the foregoing instrument.
Witness my hand and official seal this 1% day of 20
My commission expires S5 `7--k6 t 7
Notary Public
o\ N T O/
P
61,
SEALP�
Notary Public u'
= Granville County
/ / / /�THI C A���,\\\��
Last updated: 6/18/2012

D P CX
a
z
.sy�H CA�ov
Return after Environmental Programs Manager
recording to: Town of Apex
PO Box 250
Apex, NC 27502
WET DETENTION BASIN OPERATION & MAINTENANCE AGREEMENT
This Operation and Maintenance Agreement ( "Agreement ") is established this 18 day
of December 201? by Lufkin Lease Fee LLC
( "Owner "), who is the owner of the Property (hereinafter defined), on behalf of the Owner, the
Association (if applicable), and all successor Owners of the Property and the Town of Apex
( "Town ").
The "Property" is that certain property known as
Lufkin Leased Fee LLC L02 and which is more
particularly described in that certain deed recorded in Book 14251 Page 2628 Wake
County Registry.
Owner represents, warrants, and agrees that Owner is financially responsible for the
construction, maintenance, repair and replacement of all stormwater control structures,
appurtenances and vegetation, including the impoundment, located on the Property. Owner
agrees to perform the maintenance as outlined below and as may be applicable or required as
part of the regulations set forth in Section 6.1.12 of the Town of Apex Unified Development
Ordinance. A Home Owners Association or Property Owners Association shall not be the
financially responsible party unless more than 50% of the lots or units have been sold and a
resident of the subdivision has been named the president.
Owner shall keep a maintenance record for maintenance performed related to
stormwater Best Management Practices on the Property ( "BMP Maintenance Record "). The
BMP Maintenance Record shall be kept by Owner in a log in a known, set location and made
available upon request. Any deficient BMP elements noted in the inspection shall be corrected,
repaired or replaced immediately by Owner. These deficiencies can affect the integrity of
structures, safety of the public, and the pollutant removal efficiency of the BMP.

2
NUMBER OF WET DETENTION BASINS:
1
A wet detention basin is a stormwater management facility that includes a permanent
pool of water for removing pollutants and additional capacity above the permanent pool for
detaining stormwater runoff. The wet detention basin system is defined as the wet detention
basin, outlet structure, pretreatment including forebays, grassed swales, and the vegetated
filter if one is provided.
The system (check one): (x) does (_) does not incorporate a vegetated filter at the outlet.
The system (check one): (_) does ( x ) does not incorporate a pretreatment other than a
forebay.
Inspection and maintenance procedures:
• Immediately after the wet detention basin is established, the plants on the vegetated
shelf and perimeter of the basin shall be watered twice weekly if needed, until the
plants become established (commonly six weeks). The watering shall take place on
designated days according to the odd /even watering schedule cited in the Town of Apex
Code of Ordinances.
• No portion of the wet detention basin shall be fertilized after the first initial fertilization
that is required to establish the plants on the vegetated shelf.
• Stable ground cover shall be maintained in the drainage area to reduce the sediment
load to the wet detention basin.
• The flushing of the sediment through the emergency drain shall be minimized to the
maximum extent practical.
After the wet detention basin is established, Owner shall inspect it once a month and within 24
hours after every storm event greater than 1.0 inches. Owner shall keep records of inspection
and maintenance in a known, set location and will be made available upon request.
Notices to Owner shall be sent to:
4g04 Wit -hrs P,�d G Dr.4vi4c- l40
��' NG 27G4G
h?TW 'To,& H`-yw-ef -"
(Phone number)
L19i 1424 -` 313
Notices to Town shall be sent to:
Environmental Programs Manager
PO Box 250
Apex, NC 27502
(919) 249 -3413
Last updated: 6/18/2012

Inspection activities shall be performed by Owner as follows. Any problems that are
found shall be repaired by Owner immediately.
BMP Element
Potential Problems
Problem Remediation
The entire BMP
Trash /debris is present.
Remove the trash /debris.
Regrade the soil if necessary to
Areas of bare soil and /or
remove the gully and plant a
The perimeter of the wet
erosive gullies have formed.
ground cover. Water until it is
established; provide lime and a
detention basin
onetime fertilizer application.
Vegetation is too short or
Maintain vegetation at a height of
too long.
approximately six inches.
Unclog the pipe. Dispose of the
The pipe is clogged.
sediment offsite.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
The inlet device: pipe or
Regrade the Swale if necessary to
Swale
smooth it over and provide erosion
Erosion is occurring in the
control devices such as reinforced
swale.
turf matting or riprap to avoid
future problems with erosion.
Search for the source of the
Sediment has accumulated
sediment and remedy the problem
to a depth greater than the
if possible. Remove the sediment
original design depth for
and dispose of it in a location
sediment storage.
where it will not cause impacts to
streams or the BMP.
The forebay
Provide additional erosion
protection such as reinforced turf
Erosion has occurred.
matting or riprap if needed to
I prevent future erosion problems.
Remove the weeds, preferably by
Weeds are present.
hand. If pesticide is used, wipe it on
the plants rather than spraying.
Best professional practices
show that pruning is needed
Prune according to best
to maintain optimal plant
professional practices.
health.
Determine the source of the
The vegetated shelf
problem: soils, hydrology, disease,
etc. Remedy the problem and
Plants are dead, diseased, or
replace plants. Provide a onetime
dying.
fertilizer application to establish
ground cover if a soil test indicates
it is necessary.
Last updated: 6/18/2012

BMP Element
Potential Problems
Problem Remediation
Remove the weeds, preferably by
Weeds are present.
hand. If pesticide is used, wipe it on
the plants rather than spraying.
Search for the source of the
Sediment has accumulated
sediment and remedy the problem
to a depth greater than the
if possible. Remove the sediment
original depth for sediment
and dispose of it in a location
storage.
where it will not cause impacts to
The main treatment area
streams or the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Use traps to remove muskrats and
Evidence of muskrat or
consult a professional to remove
beaver activity is present.
beavers.
The embankment
A tree has started to grow
Consult a dam safety specialist to
on the embankment.
remove the tree.
An annual inspection shows
Make all needed repairs. Consult a
that the embankment needs
professional.
repair.
Clean out the outlet device.
Clogging has occurred.
gg g
Dispose of the sediment offsite.
Repair or replace the outlet device.
The outlet device is
The outlet device
damaged.
Contact the Town of Apex Public
Erosion or other signs of
damage have occurred in the
Works & Utilities Department at
outlet.
2493427.
Last updated: 6/18/2012

�1
The measuring device used to determine the sediment elevation shall be such that it will give
an accurate depth reading and not readily penetrate into accumulated sediments.
When the permanent pool depth reads 6.5 feet in the main pond, the sediment shall be
removed to original design specifications.
When the permanent pool depth reads 5.5 feet in the forebay, the sediment shall be
removed to original design specifications.
Sediment Removal
Bottom EI. 419
BASIN DIAGRAM
(fill in the blanks)
rcrmuncnu, rour r.levauun 425.5
Tstediment\-";Itir� TI'ML']lr ol.
420 Volu/irt,
------ -- ° °- Sediment Removal Elevation 419
-ft min.
- - - - -- ------Remo-- --- - °- �-- -- - - - ---- -- --
c Bottom Elevation 416 1 -ft ed. Storage
FOREBAY MAIN POND
Last updated: 6/18/2012

The agreements, conditions and obligations contained herein are and shall be covenants
and the same shall be binding upon the Owner and its agents, personal representatives, heirs
and assigns and all other successors in interest and shall continue as a servitude running with
the above described land in perpetuity. Owner agrees to notify the Town of Apex of any
problems with the BMP and notify the Town prior to any changes to the BMP or responsible
party.
IN WITNESS WHEREOF, the Owner has caused this instrument to be signed in its
corporate name by its duly authorized officers and its seal to be hereunto affixed by authority
of its Board of Directors, the day and year first written above.
JI
y!i .
(❑ e )
NA
Title
Attest:
Secretary (Corporate Seal)
STATE OF JZ;k !
UDQJ-412— COUNTY
I, the undersigned Notary Public, do hereby certify
that . 3oS--Vti f'y'V-- S,:O -cow-j personally appeared before me this day and acknowledge
the execution of the foregoing instrument.
Witness my hand and official seal this _V$ day of 20
My commission expires S -7 " d,o�
Notary Public
"S' le
r�le
O
SEAL \�t p. N "X
Notary Public co
- Granville county
CA R
Last updated: 6/18/2012

U
Ld
w
a
N
NN
U
0
0
3
a
Uj0
0
z
a
0
0
Z
s
N
L
X
w
in
U
0
0
N
L
N
N
M
0
M
a
0
i
i
Y
Vx
,
1 1 \ \
\ \ \ \
I 01 I /
= At7--f: /l ✓/
Gd
OLD LUFKI - -- — ;�► \ �/� / ss\ MG \�\ \\�/ / / / l
N ROAD_ (� -144
_ _ _
/� �'�'_ �— — _ _ / �FM _ FWT-{ — =�FM _F — �,�J}�� R T�� I J j / /J� \ op
/ _ _ / / F%f ������ / r / /i % \ \ \ \
J -W F�.� (F � 'FM- ."� �� / d,� \ \ \�j \ \ \ \ ��FM
J --- — — — •_ =� J— fir- _
/ /_G_ �M `I� \ ` \�\ / \ /'- _ ✓\` Aj \✓ / / /
I ,
\ I I \
���� L i� ` \`
�45/\/
\y I — 1YPE \\ ` \\ �� \ \ > \\\ / /\ I I I I I I 1 1 1 \ \ eVFF ON
70, e(/ ��— 445,r f \ \\\ \ `� �' I I I I \ \ \ �ME�E UC�� / I �. \ \ \ • �'`
I ( LBG SEA l \ \ y I I \ l E ?\_N 3 / 4 / t .� : �;::• I 1 /
\\ \ ♦ I \ \ \ \ 1008 'CO E 50 X45 - y'<-
\ 1
444 >�` O`R / \
*443 \ \�l�\ \� \ \ \ \ \ \ \ \ \P �P` \ /�,0. - -- -__ -,_ - -/ // X445 \ f'I" \` \ \ «'`. •Z`'' ✓ I I I
I \/ /I r
441 \ �s \\ \\ \
\ \�\ \ \ \ \ \ \ `� TOTAL SITE_AR•EA = — 3 Q AC - - - - - -
440 �\\ \\ \\ \ \� \ \.\. �- ;� -_ - - -/ / // / /,ol�' / I I \ 5 �- �•, \ \ 1 1 \ \�i // / /
1�E- ReL4TITSSOB a�` I
c—`
0 � / / / / / / / - �`k \�\\ \ \ \ \ - - D1�A.�N� -FROM \ / i, / / �/ I I �/ :::� // \\ \ .: ..• \ \ , l \ \ \ \ F� / / /
�\ \ - R9LJ�E- S�flRM= _ - -E �B7i TO-BM P 1
\\ .- DRAINAGE F� 9M--
_ 435 \ \ \ \ �� \ \ \ \\ \\ \ G / I �✓ .. �/ \\ \ ' \ 1
\ \\\ � � EX FE TO By _ f� / !/ '
/ I
'F - — — /�N /// Sao // r�� // \ \ \ �� \ \Fc
—_ — - - -i / —____ - -- \\ \ \\ \\\ \ \ \ \\\ , \ PUBS �T�— �, /�� /�\ \ \ \ \ \ \ \ \ \
t - - -- _ \_ _ _ \ \ \ \ \\\\ i -/-�� \
- - - -- I , / _ -- \ 38 \ \ \ \\ \ \ \ \ / — _ 1 1 / / / / \ ♦ I 1 0� �/ \ \off \ •� /
\ \ I / / —445
j\ I I I WET POND �� - h G p <
MP
— 1 "
\ I\ 1 I I . _
\ \ N \ mod-
- _ — — � \\ \ \ l I � ' \ / / � / \ \ 1 1 3 R P III � �� 4� - - - �� � • ° - of ^ia � f a � ' � .` — — — �' � o�� / / / ��. / // o'�"IyF �l I 1 •. I \ \ \ \ I
41\G �1 I • � �. � � a � —� a / / \ \ \ \
FLO I III I l y. / ° I f ,�.� (�� j' /�
49 1 \ \ -B IP S�
a // / / s� '. / � ham'•• � \ \ `'•\ \ \\ 0 1 \
PARCEL 1 1 � � I I I I I IIII I 3° 40 � , o •/ ' / �� h , ;...• . � - � • \ o \ \ •• • \ � \ \
/ / IT / ! T /
TOTAL IT = f
m I / L S E AREA 5.78 AC 26rBLD ETBFCCI4
A / / BORROW AREA
v / / / m I / (MIN. 1% SLOPE) / I III III 1 I III I I 1 _ — I I� �yo // / / //' �/ / ON //• �� / �\ — \ \ \' \1\
// I / \ / I I I / II I IIII llI /I /Il 1 I \ / / /' / % I O o /' / /' / o
{'
_445 / l I III l l \ l 1 I, / / l ' ,,�° / / ' / / I / %� J a
in \ 1
Rgo / l l I I I I I I I I A 11 -1 I /I I• %`\ � � I ' � / \ J \ \ \ \ \ 1
/' �� / .00
1 /
/ / // // / II I /I � I I I I � II- - I a it � i M/ OT L ITE ARIEA I- f�3. 3 ' •/ I I / / � O� / � Y o � I /
°� 1 \ �. \I \� I
�/ /'( / , \� ► \
°0; I �� / \` \ I /// `�ti ♦ \ \\ I \
10 LEVEL \SP EACbER 0 I // ll 1
/ I� I I \ \ I I I �\ J \
, �
L-�- -�- �- �- / / / / , / l / l l AI I l\ J' l ,/ WI TH 0' V�G TAIED I I 1 PS G I''I O�� I I /o`er/ / _ \\ i' \ I 1 �\ ♦ ` \ \
FILTER STRIA \ 1 I �g`d /.I / I S o`j`
I I I I I \ \ \ I \ II \ \ I \ — _ l\ I I I / / /h // // r1 ���'/ / /, / \ \ PP I Ry °� A'" / / ; J
ID, /�
1 I I 1 1 \ \ \ \ \ S6�d /�� / \ �� �� ���'/ 0�•� -/ // / /f' �' \ \� \ \\ J \\ \ �� �� 1
y1z,
O/ / /
2D� °� //p / / / 1Y I \_ \ \ 1 \ \ \ �\ \ \ \
GSETBACK / / /�Ll�j / / /�i / /l /l I/ // /// / /// // /i / / /�' /'
\ \\ \ \\ \\ \ \ \ \ \ \ 'tom -- /// '� /�/ / / \ / , // / / \ / A/
\ \ \ \ \ \ \ \ \ \ 60' PERIMETER BUFFER
\ DRAINAGE AREA TO BMP 1 \\
\ \ \ / # / \
\ \ \ \ \ \ \ \ \ \ \ \ \ / INCLUDING RUN -OFF FROM
\\ \ \ \ \ \ \ \ \ \ \\ \\ \\ \� - -Jll 11 / % / 111 ll''l / / / -/ �� �> ( ( / /�/' / l / / '/ '` /i / l l / / °�,X/ l i //' PORTIONS OFILUFKN ROAD
77 7 / / / / / / / // // // / / / I / / / ' / I /� / �/ \ / J `/ / AND TE�J TENT ROA AND
\\ \ \ \ \ \ \ \ \ \\\V�_ \, \ \,/ / / / // % / / / / /`'j / / / / 1 Q,r� // // /Q x / I FUTUREIDEVEIOPM NT FOR
now i \ / o I / PARCEL 2 (±§.84 CRES
)�/ 111 I l 11 ) /� / / / // �, �\ I / / / 1 I (
GRADING PLAN NOTES:
1. NO SITE DEVELOPMENT ACTIVITY INCLUDING BUT NOT LIMITED TO TESTING, CLEARING, INSTALLATION OF
S &E MEASURES, OR GRADING, SHALL OCCUR UNTIL REQUIRED PROTECTION FENCING HAS BEEN INSTALLED
AND INSPECTED. A PROTECTION FENCING INSTALLATION PERMIT MAY BE OBTAINED AT THE PLANNING
DEPARTMENT OR BY CALLING 919 249 -3426.
4. SITE ELEMENTS REQUIRED TO SATISFY RECREATIONAL REQUIREMENTS SUCH AS BUT NOT LIMITED TO 7`
PLAYFIELDS AND GREENWAY TRAILS AND ITEMS TYPICALLY ASSOCIATED WITH THEM (BENCHES, TRASH
CONTAINERS, SIGNS, ETC.) MUST MEET ANY APPLICABLE STANDARDS FOUND IN THE TOWN OF APEX g
STANDARD SPECIFICATIONS AND CONSTRUCTION DETAILS AND AND THE REQUIREMENTS OF THE TOWN OF
APEX PARKS AND RECREATION DEPARTMENT.
2. PROTECTION FENCING MUST BE PLACED AWAY FROM ANY SAVED TREE 1 -FOOT FOR EACH INCH OF TREE 5.
CALIPER. PROTECTION FENCING MUST BE PLACED AT LEAST 10 FEET AWAY FROM ANY OTHER DESIGNATED
RESOURCE CONSERVATION AREA, SUCH AS BUT NOT LIMITED TO HISTORIC BUILDINGS AND STRUCTURES,
WETLANDS, AND PONDS. PROTECTION FENCING MUST BE PLACED ALONG THE OUTSIDE LINE OF THE
100 -YEAR FLOODPLAIN, AND THE OUTSIDE EDGE OF ANY RIPARIAN BUFFER. ADDITIONAL PROTECTION
FENCING MAY BE REQUIRED IN OTHER LOCATIONS CLOSE TO CONSTRUCTION ACTIVITY WHERE IT IS
DEEMED NECESSARY BY THE ZONING ENFORCEMENT OFFICER; SUCH AREAS MAY INCLUDE BUT ARE NOT
LIMITED TO COMMON PROPERTY LINES OR NEAR PUBLIC AREAS (SIDEWALKS, ETC.). 6•
3. ALL GRADING AND SUPPORT STRUCTURES ASSOCIATED WITH ANY RETAINING STRUCTURE SHALL NOT
ENCROACH INTO ANY REQUIRED BUFFER OR PROTECTED AREA (SUCH AS BUT NOT LIMITED TO, RCA AND
CRITICAL ROOT ZONES OF TREES, PUBLIC UTILITY EASEMENTS AND RIGHTS -OF -WAY), AND SHALL BE
CONTAINED ENTIRELY ON SITE.
No.
Revision
Date
B
1
TOA 1ST REVIEW COMMENTS
09/12/12
TLM
2
TOA 2ND REVIEW COMMENTS
10/31/12
TLM
Designer
CMD TLM
Scale
1 " = 50'
Drawn By
Date
TLM
04/02/12
Checked By
Job No.
CMD
02110432.00
Town of
RETAINING SYSTEMS PROVIDING A CUMULATIVE VERTICAL RELIEF GREATER THAN FIVE FEET IN HIEGHT 9
WITHIN A HORIZONTAL DISTANCE OF 50 FEET OR LESS, INCLUDING RETAINING WALLS OR MECHANICALLY
STABILIZED EARTH WALLS SHALL BE DESIGNED AND CONSTRUCTED UNDER THE RESPONSIBLE CHARGE OF
A REGISTERED PROFESSIONAL ENGINEER AND COMPLY IN ALL ASPECTS WITH THE NC BUILDING CODE,
SECTION 1610. RETAINING SYSTEMS MEETING THIS CRITERIA WILL REQUIRE A SEPARATE BUILDING PERMIT
PRIOR TO START OF WORK.
PER UDO SECTION 6.1.12(G) - PRIOR TO APPROVAL OF A FINAL PLAT OR ISSUANCE OF A CERTIFICATE
OF OCCUPANCY, ANY DEVELOPMENT WHERE ENGINEERED STORMWATER CONTROL STRUCTURE IS REQUIRED,
PLEASE CONTACT MIKE DEATON TO DEMONSTRATE THAT THE REQUIRED STRUCTURE IS IN PLACE, THAT IT
IS OPERATIONAL, AND THAT IT COMPLIES WITH ALL RELEVANT PORTIONS OF SECTION 6.1.12 ENGINEERED
STORMWATER CONTROLS. IF THE ENGINEERED STORMWATER CONTROL STRUCTURE IS USED AS PART OF A
TEMPORARY EROSION CONTROL MEASURE, THE INSPECTION WILL OCCUR DURING THE APPROPRIATE
PHASE OF CONSTRUCTION.
SHEETZ AT LUFKIN AND TEN TEN
Wake Coun
North Carolina
A GRADING PERMIT FROM THE BUILDING INSPECTION DIVISION IS REQUIRED PRIOR TO ANY GRADING ON
SITE IN CONFORMANCE TO THE NC BUILDING CODE APPENDIX J (GRADING).
GRADING AND DRAINAGE FOR NEW LUFKIN ROAD BASED ON TOWN OF APEX RE- ALIGNMENT PROJECT
PREPARED BY KIMLEY -HORN & ASSOCIATES. CONTRACTOR TO VERIFY AS -BUILT CONDITIONS.
REFER TO SHEETS 4.1 AND 4.2 FOR DETAILED GRADING WITH SPOT ELEVATIONS FOR SHEETZ PARCEL.
REFER TO SHEET 4.3 FOR STORM DRAINAGE SCHEDULE. REFER TO SHEET 5.1 FOR OFF -SITE DIVERSIONS.
REFER TO SHEET 8.0 FOR BMP DETAILS
GRAPHIC SCALE
50 0 25 50 100
1 inch = 50 ft.
0"55,6600000600 00
° °O-` , (^6o�
° ° °
p00 O 000/ °°
o p ESS/ p00 �°
o
°
°
SEAL 0. o
° ° G °
O 0 0 O
031219 0 0
° 0 0 O
o 0000 ,q� 000. -0.0 �� ° ° °°
°0000 Coo .. 000DV 0000
OVERALL GRADING &DRAINAGE PLAN
THE SIGNATURES AFFIXED BELOW CERTIFY THAT THIS SHEET HAS BEEN REVIEWED AND APPROVED
SOLELY PER THE CERTIFICATIONS SIGNED ON THE COVER SHEET OF THESE CONSTRUCTION PLANS.
CM - ENGINEERING
CM - TRANSPORTATION
CM - BUILDING INSPECTIONS
PUBLIC WORKS - WATER /SEWER
PUBLIC WORKS - ELECTRIC
PUBLIC WORKS - S & E
DATE PUBLIC WORKS - ENV. PROGRAMS DATE
DATE PLANNING DATE
DATE PLANNING - TRANSPORTATION DATE
DATE FIRE DATE
DATE PARKS, RECREATION & CULTURAL RES DATE
DATE
WITHERS & RAVEN EL
ENGINEERS I PLANNERS I SURVEYORS
111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] www.withersravenel.com License No. C -0832
Sheet No.
4.0

U
U
0Z
fr
Ld
0
I
a
M
W
N
0
N
a�
E
U
in
0
N
I
a
a
m
m
x
rn
N
rn
0
0
U
2
N
EnU
t
in
U
0
0
J
N
L
V)
N
M
0
M
a
0
i
i
Y
-(-T \� Q LCD
F
S �LLOw
bol-
TLAND \
I \ \
1 ` WET\R0
` \BMP _
I \
ss -
' 430
/ \ 430 I
0000
I% � ♦ � I I
II II \ � ♦ ` I I I
f I
' ^1 ♦ � I 5
PLANTING REQUIREMENTS - BMP #1
SHALLOW WATER (NORMAL POOL TO 6" BELOW) = 1,725 SF 50 HERB. PLANTS / 200 SF = 432 PLANTS
PLANT TYPE
QTY
I KEY
BOTANICAL NAME
COMMON NAME
ROOT
CALIPER
HEIGHT
NOTES
HERBACEOUS
75
45
Acorus calamus
Sweet Flag
CONT.
1 Gal.
4" Pot
24" O.C.
24" O.C.
12
45
Acorus calamus 'Variegata'
Variegated Sweet Flag
CONT.
1 Gal.
4" Pot
24" O.C.
24" O.C.
12
120
Peltandra virginica
Arrow arum
CONT.
1 Gal.
4" Pot
24" O.C.
24" O.C.
120
160
Pontedaria cordata
Pickerelweed
CONT.
4" Pot
4" Pot
24" O.C.
24" O.C.
18
115
Sagittaria latifolia
Broadleaf Arrowhead
CONT.
1 Gal.
4" Pot
24" O.C.
24" O.C.
120
12
Saururus cernuus
Lizard's tail
CONT.
4" Pot
1 Gal.
24" O.C.
24" O.C.
75
31
Schoenoplectus tabernaemontani
Softstem Bulrush
CONT.
4" Pot
3 Gal.
24" O.C.
SHALLOW LAND (NORMAL
POOL TO 6" ABOVE) = 1,988 SF 50 HERB. PLANTS / 200 SF = 497 PLANTS
PLANT TYPE
QTY
I KEY
BOTANICAL NAME
COMMON NAME
ROOT
CALIPER
HEIGHT
NOTES
HERBACEOUS
45
GTI
Carex stricta
Tussock Sedge
CONT.
4" Pot
12' MIN.
24" O.C.
TREES
45
LIS
Iris versicolor
Northern Blue Flag Iris
CONT.
4" Pot
8' MIN.
24" O.C.
418.50
120
120 LF 4" DIP 0 3.33%
Iris virginica
Southern Blue Flag Iris
CONT.
4" Pot
BARREL INV OUT
24" O.C.
SHRUBS
160
ABC
Juncus effusus
Soft Rush
CONT.
4" Pot
18 " -24"
24" O.C.
418.00
115
ICB
Lobelia cardinalis
Cardinal Flower
CONT.
4" Pot
18 " -24"
24" O.C.
I
12
LCD
Scirpus cyperinus
Woolgrass
CONT.
1 Gal.
18 " -24"
24" O.C.
BMP #1 SCREENING
PLANT SCHEDULE
PLANT TYPE
QTY
I KEY
BOTANICAL NAME
COMMON NAME
ROOT
CALIPER
HEIGHT
NOTES
TLM
9
GTI
Gleditsia triacanthos inermis 'Shademaster'
Thornless Honey Locust
B &B
2 1/2"
12' MIN.
MATCHED SPECIMENS
TREES
42
LIS
Lagerstromia indica 'Siren Red' (Whit VII)
Siren Red Crape Myrtle
CONT.
1 1/2"
8' MIN.
MATCHED SPECIMENS
418.50
WATER QUALITY OUTLET BARREL
120 LF 4" DIP 0 3.33%
GROUT EACH SIDE
BARREL INV IN
.'
425.50
BARREL INV OUT
ORIFICES MUST BE CAPPED OR PLUGGED.
SHRUBS
52
ABC
Abelia x grandiflora 'Edward Goucher'
Edward Goucher Abelia
CONT.
3 Gal.
18 " -24"
48" O.C.
418.00
32
ICB
Ilex cornuta 'Burfordii Nana'
Dwarf Burford Holly
CONT.
3 Gal.
18 " -24"
48" O.C.
I
99
LCD
Loropetalum chinense'Daruma'
Daruma Loropetalum
CONT.
3 Gal.
18 " -24"
48" O.C.
31
SJG
Spiraea japonica ' Goldmound'
Goldmound Spiraea
CONT.
3 Gal.
12 " -18"
36" O.C.
21
VTS
Viburnum tinus 'Spring Bouquet'
Spring Bouquet Laurestinus
CONT.
5 Gal.
24 " -36"
60" O.C.
SKIMMER
RISER -
i
J 15 ABG
l ` 4s�
/ I oo� /
SHAL W /
WAyE / S
VEGETATED FILTER STRIP
PLANTING SPECIFICATIONS
THE VEGETATED FILTER STRIP SHALL BE
CLEARED, AND COVERED WITH A MINIMUM OF
6" OF TOPSOIL. MIX 1 -2 CUBIC YARDS OF
PEAT MOSS OR COMPOST PER 1,000 SF INTO
THE TOPSOIL. IN ADDITION, A ONE -TIME
START -UP FERTILIZATION SHOULD BE ADDED,
PER THE TABLE BELOW:
GRASS OTHER THAN CENTIPEDE:
- 75 LBS OF GROUND LIMESTONE PER 1,000
SF
- A STARTER TYPE FERTILIZER, HIGH IN
PHOSPORUS, BASED ON THE TYPE OF
GRASS AND PLANTING METHOD.
CENTIPEDE:
- 1/2 LB OF NITROGEN PER 1,000 SF
GRASS TYPE:
-GRASS TYPE SHALL BE TALL FESCUE OR
COMMON BERMUDA. GRASS SHALL BE SOD,
GROWN IN NON- CLAYEY SOIL.
-WATER SOD FREQUENTLY FOR THE FIRST
THREE WEEKS AFTER INSTALLATION, SO THAT
THE FIRST 1.5" OF SOIL IS KEPT MOIST.
WATER LEVEL DURING STORM
TRASH HOOD TOP OF DAM
1 I I
6» PEAK FLOW ATTENUATION POOL
PERMANENT POOL 10:1
r, 3' MINUMUM 10' WIDE VEGETATED SHELF TO
` 10' EXTEND TO A DEPTH OF 6" ABOVE
(SEE CHART FOR
_ ACTUAL DEPTH) VEGETATED AND BELOW THE PERMANENT POOL
_FOREBAY- SHELF
II I
12 SEDIMENT I STORAGE EARTH DAM
- STORAGE ENT- II
-i I II I I I I I l i I I I - II - I - I � DISSIPATOR PAD
ANTI- FLOATATION DEVICE RIP RAP
III_
III -
ANTI -SEEP COLLAR -
CROSS SECTION - -ICI-
RCP OUTLET PIPE
-
NTS.
No.
Revision
111A �
i
J 15 ABG
l ` 4s�
/ I oo� /
SHAL W /
WAyE / S
VEGETATED FILTER STRIP
PLANTING SPECIFICATIONS
THE VEGETATED FILTER STRIP SHALL BE
CLEARED, AND COVERED WITH A MINIMUM OF
6" OF TOPSOIL. MIX 1 -2 CUBIC YARDS OF
PEAT MOSS OR COMPOST PER 1,000 SF INTO
THE TOPSOIL. IN ADDITION, A ONE -TIME
START -UP FERTILIZATION SHOULD BE ADDED,
PER THE TABLE BELOW:
GRASS OTHER THAN CENTIPEDE:
- 75 LBS OF GROUND LIMESTONE PER 1,000
SF
- A STARTER TYPE FERTILIZER, HIGH IN
PHOSPORUS, BASED ON THE TYPE OF
GRASS AND PLANTING METHOD.
CENTIPEDE:
- 1/2 LB OF NITROGEN PER 1,000 SF
GRASS TYPE:
-GRASS TYPE SHALL BE TALL FESCUE OR
COMMON BERMUDA. GRASS SHALL BE SOD,
GROWN IN NON- CLAYEY SOIL.
-WATER SOD FREQUENTLY FOR THE FIRST
THREE WEEKS AFTER INSTALLATION, SO THAT
THE FIRST 1.5" OF SOIL IS KEPT MOIST.
WATER LEVEL DURING STORM
TRASH HOOD TOP OF DAM
1 I I
6» PEAK FLOW ATTENUATION POOL
PERMANENT POOL 10:1
r, 3' MINUMUM 10' WIDE VEGETATED SHELF TO
` 10' EXTEND TO A DEPTH OF 6" ABOVE
(SEE CHART FOR
_ ACTUAL DEPTH) VEGETATED AND BELOW THE PERMANENT POOL
_FOREBAY- SHELF
II I
12 SEDIMENT I STORAGE EARTH DAM
- STORAGE ENT- II
-i I II I I I I I l i I I I - II - I - I � DISSIPATOR PAD
ANTI- FLOATATION DEVICE RIP RAP
III_
III -
ANTI -SEEP COLLAR -
CROSS SECTION - -ICI-
RCP OUTLET PIPE
-
NTS.
No.
Revision
Date
B
1
TOA 1ST REVIEW COMMENTS
09/12/12
TLM
2
TOA 2ND REVIEW COMMENTS
10/31/12
TLM
RISER WEIR ELEVATION
3. SUBMIT SIGNED STRUCTURAL BMP 0 &M AGREEMENT AND MAINTENANCE GUARANTEE TO THE
428.50
RISER FOOTING
7' X 7' X 24" THK
4. A FINAL INSPECTION BY THE ENVIRONMENTAL PROGRAMS MANAGER SHALL BE CONDUCTED ONCE
RISER BOX
4' X 4' INSIDE DIMENSIONS
PLANNING - TRANSPORTATION
HIGH FLOW BYPASS OUTLET BARREL
100 LF 36" RCP 0 0.50%
5. IN LIEU OF STRUCTURAL BMP COMPLETION AND FINAL APPROVAL BY THE ENVIRONMENTAL
Designer
CMD TLM
Scale
AS NOTED
Drawn By
Date
TLM
04/02/12
Checked By
Job No.
CMD
02110432.00
jq
-FOR_EBAY
4'4' ON
R ER ST BOTT01�= 418.00 4V
RISER 1 1 \ \SIEDIM ``STORAGE I - --
I PDE
ILL - N�}i \
I I 1
VYE
`BMP
J PDE
\ABIL IT - l
/ /14
ss ��` � \ \ -- - / /
` \ \ ' 425 425.50
I �� NORMAL POOL =_ -
I I I 20f PRIVATE �� o \ 70.0
I I I I I I
DR*INAGE
EEMENT
I /
I I OUT
co ♦ m \ - -per
II I \ ELEV= 418.50 \ I
INV
I I I I I / ♦\ y ELEV =421.5
I( I I ENERGY
DISSIPATER \ MH 16 I
(FIL�T TOP) I
ad / I
FES 3 \ 00 10'1 LEVEL SP
GRADE AREA /I a° \ Llq ELEV =42e'
FOR VFS /
30 LONG x 10 WIDE VEGETATED
FILTER STIR /® --� t 1.67 %. \ '
REFER TO G 19T - R STRIP
/ PLANTING E (F ICATIONS THIS SHEET.
j5' LS/VFS FS 30
ACCESS
EASEMENT
GRAPHIC SCALE BMP 41
20 0 10 20 40
1 inch = 20 ft.
NOTE:
RISER BOX, SKIMMER AND OUTLET PIPE SHALL BE
INSTALLED AT PRIOR TO THE BEGINNING OF OVERALL SITE
GRADING AND SHALL BE UTILIZED AS A SEDIMENT CONTROL
DEVICE CONSTRUCTION. ONCE SITE HAS BEEN STABILIZED
AND GRADING IS COMPLETE THE BASIN SHALL BE CLEANED
OUT AND STABILIZED. THE SKIMMER SHALL BE REMOVED.
RISER SLAB
COVER/ TRASH
HOOD
RISER WEIR ELEV.
'O -RING' JOINT
PLACE STEM SUPPORTS
AT 3' FROM BASE
NORMAL POOL
i
1'
4" CAP WITH -
2" WATER QUALITY ORIFICE
6" NRS GATE VALVE -
ATTACH TEMPORARY SKIMMER -
DURING CONSTRUCTION
RISER FOOTING
VOID SPACE
8" MIN.
I /
I / SS Pvc
_1/ /
' I ARIABLE WIDTH /
\ MP MAINTENANCE
A EM CC S�
I
FLOW BY
STRUCTU
BMP #1 LEVEL SPREADER CALCULATIONS
DIMENSIONS
ELEVATION
PERMANENT POOL
FLOW OONTROL ORIFICES
425.50
TOP OF DAM
10'
430.00
WATER QUALITY ORIFICE
2.0" DIAMETER
425.50
RISER WEIR ELEVATION
3. SUBMIT SIGNED STRUCTURAL BMP 0 &M AGREEMENT AND MAINTENANCE GUARANTEE TO THE
428.50
RISER FOOTING
7' X 7' X 24" THK
4. A FINAL INSPECTION BY THE ENVIRONMENTAL PROGRAMS MANAGER SHALL BE CONDUCTED ONCE
RISER BOX
4' X 4' INSIDE DIMENSIONS
PLANNING - TRANSPORTATION
HIGH FLOW BYPASS OUTLET BARREL
100 LF 36" RCP 0 0.50%
5. IN LIEU OF STRUCTURAL BMP COMPLETION AND FINAL APPROVAL BY THE ENVIRONMENTAL
BARREL INV IN
FEET OF LEVEL LIP REQUIRED PER CFS: 10 FT /CFS
419.00
BARREL INV OUT
PARKS, RECREATION & CULTURAL RES
418.50
WATER QUALITY OUTLET BARREL
120 LF 4" DIP 0 3.33%
GROUT EACH SIDE
BARREL INV IN
.'
425.50
BARREL INV OUT
ORIFICES MUST BE CAPPED OR PLUGGED.
421.50
FLOW CONTROL ORIFICE
TWO 2.5' WIDE X 6" HIGH
427.15
EMERGENCY SPILLWAY
NOT APPLICABLE
36" RCP OUTLET BARRELL
POND BOTTOM
'O -RING' GASKETED
418.00
I /
I / SS Pvc
_1/ /
' I ARIABLE WIDTH /
\ MP MAINTENANCE
A EM CC S�
I
FLOW BY
STRUCTU
BMP #1 LEVEL SPREADER CALCULATIONS
�\
TWO 2.5' WIDE X 6" HIGH
THE FOLLOWING MUST OCCUR PRIOR TO FINAL PLAT AND /OR CERTIFICATE OF OCCUPANCY (CO):
FLOW OONTROL ORIFICES
PEAK DISCHARGE FROM BMP (10 -YEAR STORM): 0.20
CFS
1. ALL BMPS MUST BE INSTALLED IN ACCORDANCE WITH THE APPROVED CONSTRUCTION PLANS.
4' X 4' CONCRETE
PRECAST BOX
VEGETATED FILTER STRIP
MAX. CAPACITY OF 100 -FOOT LEVEL SPREADER
REQUIREMENTS INCLUDING A SIGNED AND SEALED CERTIFICATION STATEMENT.
PUBLIC WORKS - ENV. PROGRAMS
3. SUBMIT SIGNED STRUCTURAL BMP 0 &M AGREEMENT AND MAINTENANCE GUARANTEE TO THE
CM - TRANSPORTATION
WITH VEGETATED FILTER STRIP: 10
CFS
4. A FINAL INSPECTION BY THE ENVIRONMENTAL PROGRAMS MANAGER SHALL BE CONDUCTED ONCE
LEVEL SPREADER
THE AS -BUILT SUBMITTAL HAS BEEN RECEIVED. ONCE APPROVED, THE ENVIRONMENTAL
PLANNING - TRANSPORTATION
PROGRAMS MANAGER WILL SEND A BMP APPROVAL LETTER TO THE OWNER.
PUBLIC WORKS - WATER /SEWER
5. IN LIEU OF STRUCTURAL BMP COMPLETION AND FINAL APPROVAL BY THE ENVIRONMENTAL
FIRE
FEET OF LEVEL LIP REQUIRED PER CFS: 10 FT /CFS
PUBLIC WORKS - ELECTRIC
ACCORDANCE WITH UDO SECTION 6.1.12(G). IF THE CONTRIBUTING DRAINAGE AREA FOR THE
PARKS, RECREATION & CULTURAL RES
BMPS IS UNSTABLE AT THE TIME OF FINAL PLAT APPROVAL FOR A SUBDIVISION, THE TOWN WILL
CALCULATED MIN. LENGTH. OF LEVEL LIP: 2
EEET
GROUT EACH SIDE
THE VOLUME OF THE BASIN OVER A 2 -3 DAY PERIOD. POROUS BAFFLES SHALL EITHER
.'
CONTINUE TO BE MAINTAINED (IF CONVERTING FROM A SEDIMENT BASIN) OR BE INSTALLED. ANY
* USE MIN. 10 -FOOT LEVEL SPREADER LENGTH.
ORIFICES MUST BE CAPPED OR PLUGGED.
-JOINT SEALED WITH
A -LOCK NEOPRENE GASKET
6. ALL STRUCTURAL BMPS WILL BE REQUIRED TO BE CONVERTED PRIOR TO ISSUANCE OF THE
CAST IN MANHOLE WALL
FINAL CERTIFICATE OF OCCUPANCY FOR SHEETZ. DEVELOPMENT OF FUTURE PARCEL 2 WILL BE
36" RCP OUTLET BARRELL
REQUIRED TO TAKE PROPER MEASURES TO CONTROL SEDIMENTATION AT A LATER DATE WHEN
'O -RING' GASKETED
UNDER CONSTRUCTION.
CLASS III RCP
7. IF A STRUCTURAL BMP COUNTS TOWARDS RCA, THE REQUIRED LANDSCAPING SHALL BE
T
6' WIDE
I
SURGE
BMP #1 VEGETATED FILTER STRIP (VFS
BLIND SWALE
I
STONE ON
FILTER
WIDTH OF VFS: 30 -FEET
FABRIC
ELEVATION AT DOWNSLOPE OF LEVEL LIP: 321.50
ELEVATION AT THE END OF THE VFS: 321.00
UNDERDRAIN
SLOPE: 1.67%
PAVED INVERT L'A GROUT 6" ZONING COMPLIANCE OFFICER AT (919) 249 -3426.
;'r-II °pp0°o0000000p0pO
' a LEVEL SPREADER NOTES: ° ° ° °���N °CAR�� °°
..a : a •a . ' .. a , . a ° d •.. °o pEESS/•p,�,° °�tiy ° °o
" a . " 1. LEVEL SPREADER DESIGN BASED ON CURRENT o Q� `yl
°•da' DIVISION OF WATER QUALITY DESIGN GUIDELINES. o o SEAL o e
O o o p
2. INSPECT LEVEL SPREADER AFTER EACH RAINFALL, 031219 0
RISER 8c D R A WD 0 WN DEVICE DETAIL UNTIL VEGETATION IS WELL ESTABLISHED, AND o° CP 0.0 08000 0; �c
MAKE ANY NECESSARY REPAIRS; AFTERWARDS, ° ° °° q ° ° ° ° ° ° ° ° °° � °
NTS INSPECT PERIODICALLY AND KEEP VEGETATION ° °° 000000 M;o05'a's °
HEALTHY AND MAINTAINED.
SHEETZ AT LUFKIN AND TEN TEN
Town of Apex Wake County North Carolina
BMP PLAN &DETAILS
LEVEI
6' WIDE BLIND SWALE
VEGETATED FILTER STRIP
3' -0"
FLOW PATH
LEVEL 3 INCHES OF SURGE STONE
-ADER LIP
I EE� I EE� I - - - RECEIVING
- III -I I i i II I II i II I II i II I I, STREAM
3 FEET WIDE STRIP OF FILTER FABRIC
CONCRETE FOOTER
(SIZED BY OTHERS
LEVEL SPREADER DETAIL
STRUCTURAL BMP CONSTRUCTION SEQUENCE:
TWO 2.5' WIDE X 6" HIGH
THE FOLLOWING MUST OCCUR PRIOR TO FINAL PLAT AND /OR CERTIFICATE OF OCCUPANCY (CO):
FLOW OONTROL ORIFICES
THIS SHEET HAS BEEN REVIEWED AND APPROVED
1. ALL BMPS MUST BE INSTALLED IN ACCORDANCE WITH THE APPROVED CONSTRUCTION PLANS.
4' X 4' CONCRETE
PRECAST BOX
2. ENGINEER MUST SUBMIT AN AS -BUILT PACKAGE WHICH MEETS ALL TOWN OF APEX
CM - ENGINEERING
REQUIREMENTS INCLUDING A SIGNED AND SEALED CERTIFICATION STATEMENT.
PUBLIC WORKS - ENV. PROGRAMS
3. SUBMIT SIGNED STRUCTURAL BMP 0 &M AGREEMENT AND MAINTENANCE GUARANTEE TO THE
CM - TRANSPORTATION
DEVELOPMENT PROJECTS COORDINATOR IN CONSTRUCTION MANAGEMENT AT (919) 249 -3394.
4" DIP TO
4. A FINAL INSPECTION BY THE ENVIRONMENTAL PROGRAMS MANAGER SHALL BE CONDUCTED ONCE
LEVEL SPREADER
THE AS -BUILT SUBMITTAL HAS BEEN RECEIVED. ONCE APPROVED, THE ENVIRONMENTAL
PLANNING - TRANSPORTATION
PROGRAMS MANAGER WILL SEND A BMP APPROVAL LETTER TO THE OWNER.
PUBLIC WORKS - WATER /SEWER
5. IN LIEU OF STRUCTURAL BMP COMPLETION AND FINAL APPROVAL BY THE ENVIRONMENTAL
FIRE
PROGRAMS MANAGER, THE TOWN OF APEX MAY ACCEPT A PERFORMANCE GUARANTEE IN
PUBLIC WORKS - ELECTRIC
ACCORDANCE WITH UDO SECTION 6.1.12(G). IF THE CONTRIBUTING DRAINAGE AREA FOR THE
PARKS, RECREATION & CULTURAL RES
BMPS IS UNSTABLE AT THE TIME OF FINAL PLAT APPROVAL FOR A SUBDIVISION, THE TOWN WILL
PUBLIC WORKS - S & E
ALLOW A SKIMMER SYSTEM TO BE CONNECTED TO THE EMERGENCY DRAIN SIZED TO DE -WATER
GROUT EACH SIDE
THE VOLUME OF THE BASIN OVER A 2 -3 DAY PERIOD. POROUS BAFFLES SHALL EITHER
.'
CONTINUE TO BE MAINTAINED (IF CONVERTING FROM A SEDIMENT BASIN) OR BE INSTALLED. ANY
ORIFICES MUST BE CAPPED OR PLUGGED.
-JOINT SEALED WITH
A -LOCK NEOPRENE GASKET
6. ALL STRUCTURAL BMPS WILL BE REQUIRED TO BE CONVERTED PRIOR TO ISSUANCE OF THE
CAST IN MANHOLE WALL
FINAL CERTIFICATE OF OCCUPANCY FOR SHEETZ. DEVELOPMENT OF FUTURE PARCEL 2 WILL BE
36" RCP OUTLET BARRELL
REQUIRED TO TAKE PROPER MEASURES TO CONTROL SEDIMENTATION AT A LATER DATE WHEN
'O -RING' GASKETED
UNDER CONSTRUCTION.
CLASS III RCP
7. IF A STRUCTURAL BMP COUNTS TOWARDS RCA, THE REQUIRED LANDSCAPING SHALL BE
INSTALLED DURING THE APPROPRIATE GROWING SEASON AND COORDINATED WITH THE TOWN
PAVED INVERT L'A GROUT 6" ZONING COMPLIANCE OFFICER AT (919) 249 -3426.
;'r-II °pp0°o0000000p0pO
' a LEVEL SPREADER NOTES: ° ° ° °���N °CAR�� °°
..a : a •a . ' .. a , . a ° d •.. °o pEESS/•p,�,° °�tiy ° °o
" a . " 1. LEVEL SPREADER DESIGN BASED ON CURRENT o Q� `yl
°•da' DIVISION OF WATER QUALITY DESIGN GUIDELINES. o o SEAL o e
O o o p
2. INSPECT LEVEL SPREADER AFTER EACH RAINFALL, 031219 0
RISER 8c D R A WD 0 WN DEVICE DETAIL UNTIL VEGETATION IS WELL ESTABLISHED, AND o° CP 0.0 08000 0; �c
MAKE ANY NECESSARY REPAIRS; AFTERWARDS, ° ° °° q ° ° ° ° ° ° ° ° °° � °
NTS INSPECT PERIODICALLY AND KEEP VEGETATION ° °° 000000 M;o05'a's °
HEALTHY AND MAINTAINED.
SHEETZ AT LUFKIN AND TEN TEN
Town of Apex Wake County North Carolina
BMP PLAN &DETAILS
LEVEI
6' WIDE BLIND SWALE
VEGETATED FILTER STRIP
3' -0"
FLOW PATH
LEVEL 3 INCHES OF SURGE STONE
-ADER LIP
I EE� I EE� I - - - RECEIVING
- III -I I i i II I II i II I II i II I I, STREAM
3 FEET WIDE STRIP OF FILTER FABRIC
CONCRETE FOOTER
(SIZED BY OTHERS
LEVEL SPREADER DETAIL
WITHERS & RAVEN EL
ENGINEERS I PLANNERS I SURVEYORS
111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] www.withersravenel.com License No. C -0832
Sheet No.
8.0
NTS
THE SIGNATURES AFFIXED BELOW CERTIFY THAT
THIS SHEET HAS BEEN REVIEWED AND APPROVED
SOLELY PER THE CERTIFICATIONS
SIGNED ON THE COVER SHEET OF THESE CONSTRUCTION PLANS.
CM - ENGINEERING
DATE
PUBLIC WORKS - ENV. PROGRAMS
DATE
CM - TRANSPORTATION
DATE
PLANNING
DATE
CM - BUILDING INSPECTIONS
DATE
PLANNING - TRANSPORTATION
DATE
PUBLIC WORKS - WATER /SEWER
DATE
FIRE
DATE
PUBLIC WORKS - ELECTRIC
DATE
PARKS, RECREATION & CULTURAL RES
DATE
PUBLIC WORKS - S & E
DATE
WITHERS & RAVEN EL
ENGINEERS I PLANNERS I SURVEYORS
111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] www.withersravenel.com License No. C -0832
Sheet No.
8.0